Peer-Reviewed Journal Articles

Kinematic But Not Clinical Measures Predict Falls in Parkinson-Related Orthostatic Hypotension

Sturchio A, Dwivedi AK, Marsili L, Hadley A, Sobrero G, Heldman D, Maule S, Lopiano L, Comi C, Versino M, Espay AJ, Merola A.
J Neurol. 2020.

Effect Of Using A Wearable Device On Clinical Decision-Making And Motor Symptoms In Patients With Parkinson’s Disease Starting Transdermal Rotigotine Patch: A Pilot Study

Isaacson S, Boroojerdi B, Waln O, McGraw M, Kreitzman D, Klos K, Revilla F, Heldman D, Phillips M, Terricabras D, Markowitz M, Woltering F, Carson S, Truong D
Parkinsonism & Related Disorders. 2019;64:132-137

App-Based Bradykinesia Tasks For Clinic And Home Assessment In Parkinson’s Disease: Reliability And Responsiveness

Heldman DA, Urrea-Mendoza E, Lovera LC, Schmerler DA, Garcia X, Mohammad ME, McFarlane MCU, Giuffrida JP, Espay AJ, Fernandez HH.

J Parkinsons Dis. 2017;7(4):741-747.

Does Added Objective Tremor Monitoring Improve Clinical Outcomes In Essential Tremor Treatment?

Vittal P, Pulliam CL, Goetz CG, Ouyang B, Jankovic J, Ramirez-Castaneda JL, Heldman, DA.

Mov Disord Clin Pract. 2018; 5: 96-98.

Telehealth Management Of Parkinson’s Disease Using Wearable Sensors: An Exploratory Study

Dustin A. Heldman; Denzil A. Harris; Timothy Felong; Kelly L. Andrzejewski; E. Ray Dorsey; Joseph P. Giuffrida; Barry Goldberg; Michelle A. Burack.

Digit Biomark 2017;1:43–51

Continuous Assessment Of Levodopa Response In Parkinson’s Disease Using Wearable Motion Sensors

Christopher L. Pulliam;  Dustin A. Heldman; Elizabeth B. Brokaw; Thomas O. Mera; Zoltan K. Mari; Michelle A. Burack

IEEE Trans Biomed Eng. 2018 Jan;65(1):159-164.

Effect Of Subthalamic Stimulation On Distal And Proximal Upper Limb Movements In Parkinson’s Disease.

Tamás G, Kelemen A, Radics P, Valálik I, Heldman D, Klivényi P, Vécsei L, Hidasi E, Halász L, Kis D, Barsi P, Golopencza P, Erőss L.

Brain Res. 2016 Oct 1;1648(Pt A):438-44. doi: 10.1016/j.brainres.2016.08.019. Epub 2016 Aug 16.

Wearable Sensors For Advanced Therapy Referral In Parkinson’s Disease

Heldman DA, Giuffrida JP, Cubo E

Journal of Parkinsons Disease. 2016 Jul 2. [Epub ahead of print]

Randomized, Blinded Pilot Testing Of Nonconventional Stimulation Patterns And Shapes In Parkinson’s Disease And Essential Tremor: Evidence For Further Evaluating Narrow And Biphasic Pulses

Umer Akbar MD, Robert S. Raike PhD, Nawaz Hack MD, Christopher W. Hess MD, Jared Skinner PhD, Daniel Martinez-Ramirez MD, Sol DeJesus MD, Michael S. Okun MD

Neuromodulation: Technology at the Neural Interface (onlinelibrary.wiley.com) DOI: 10.1111/ner.12397

Prospective Study On Cost-Effectiveness Of Home-Based Motor Assessment In Parkinson’s Disease

E Cubo, N Mariscal, B Solano, V Becerra, D Armesto, S Calvo, J Arribas, J Seco, A Martinez, L Zorrilla, and D Heldman

J Telemed Telecare 1357633X16638971, first published on March 21, 2016

Computer-Guided Deep Brain Stimulation Programming For Parkinson’s Disease

Heldman, D.A., Pulliam, C.L., Urrea Mendoza, E., Gartner, M., Giuffrida, J.P., Montgomery, E.B., Espay, A.J., and Revilla, F.J.

Neuromodulation: Technology at the Neural Interface, Dec 2015.

Motion Sensor Strategies For Automated Optimization Of Deep Brain Stimulation In Parkinson’s Disease

Christopher L. Pulliam, Dustin A. Heldman, Tseganesh H. Orcutt, Thomas O. Mera, Joseph P. Giuffrida, Jerrold L. Vitek

Parkinsonism & Related Disorders Jan 2015

Development Of A Clinician Worn Device For The Evaluation Of Abnormal Muscle Tone

E. Brokaw, D. Heldman, R. Plott, E. Rapp, E. Montgomery, J. Giuffrida
Conf Proc IEEE Eng Med Biol Soc. 2014.

Motion Sensor Dyskinesia Assessment During Activities Of Daily Living

C. Pulliam, M. Burack, D Heldman, J Giuffrida, T Mera
Journal of Parkinson’s Disease 2014

Tremor Retrainment As Therapeutic Strategy In Psychogenic (Functional) Tremor

A. Espay, M. Edwards, G. Oggioni, N. Phielipp, B. Cox, H. Gonzalez-Usigli, C. Pecina, D. Heldman, J. Mishra, A. Lang
Parkinsonism Relat Disord. 2014;20(6):647–50.

Clinician Versus Machine: Reliability And Responsiveness Of Motor Endpoints In Parkinson’s Disease

D. Heldman, A. Espay, P. Lewitt, and J. Giuffrida
Parkinsonism Relat Disord. 2014;20(6):590–5.

Continuous In-Home Monitoring Of Essential Tremor

C. Pulliam, S. Eichenseer, C. Goetz, O. Waln, C. Hunter, J. Jankovic, D. Vaillancourt, J. Giuffrida, And D. Heldman
Parkinsonism Relat Disord. 2014 Jan;20(1):37-40.

Objective Motion Sensor Assessment Highly Correlated With Scores Of Global Levodopa-Induced Dyskinesia In Parkinson’s Disease

T. Mera, M. Burack, J. Giuffrida
J Parkinsons Dis. 2013 Jan 1;3(3):399-407.

Quantitative Analysis Of Gait And Balance Response To Deep Brain Stimulation In Parkinson’s Disease

T. Mera, D. Filipkowski, D. Riley, C. Whitney, B. Walter, S. Gunzler, J. Giuffrida
Gait & Posture. 2013 May;38(1):109-14

Active-Assisted Cycling Improves Tremor And Bradykinesia In Parkinson’s Disease

A. Ridgel, C. Peacock, E. Fickes, C. Kim
Arch Phys Med Rehabil. 2012 Nov;93(11):2049-54

Automated Motion Sensor Quantification Of Gait And Lower Extremity Bradykinesia

D. Heldman, D. Filipkowski, R. Riley, C. Whitney, B. Walter, S. Gunzler, T. Mera
Conf Proc IEEE Eng Med Biol Soc. 2012.

Quantitative Assessment Of Levodopa-Induced Dyskinesia Using Automated Motion Sensing Technology

T. Mera, M. Burack, J. Giuffrida
Conf Proc IEEE Eng Med Biol Soc. 2012.

Amplitude Fluctuations In Essential Tremor

G. Mostile, R. Fekete, J. Giuffrida, T. Yaltho, A. Davidson, A. Nicoletti, M. Zappia, J. Jankovic
Parkinsonism Relat Disord. 2012 Aug;18(7):859-63

Objective Measure Of Upper Extremity Motor Impairment In Parkinsons Disease With Inertial Sensors

J. Hoffman, J. McNames
Conf Proc IEEE Eng Med Biol Soc. 2011;2011:4378-81

Feasibility Of Home-Based Automated Parkinson’s Disease Motor Assessment

T. Mera, D. Heldman, A. Espay, M. Payne, J. Giuffrida
J Neurosci Methods. 2012 Jan 15;203(1):152-6

Differential Response Of Speed, Amplitude, And Rhythm To Dopaminergic Medications In Parkinson’s Disease

A. Espay, J. Giuffrida, R. Chen, M. Payne, F. Mazzella, E. Dunn, J. Vaughan, A. Duker, A. Sahay, S. Kim, F. Revilla, D. Heldman
Mov Disord. 2011 Dec;26(14):2504-8

Acute Effects Of Passive Leg Cycling On Upper Extremity Tremor And Bradykinesia In Parkinson’s Disease

A. Ridgel, M. Muller, C. Kim, E. Fickes, T. Mera
Phys Sportsmed. 2011 Sep;39(3):83-93

The Modified Bradykinesia Rating Scale For Parkinson’s Disease: Reliability And Comparison With Kinematic Measures

D. Heldman, J. Giuffrida, R. Chen, M. Payne, F. Mazzella, A. Duker, A. Sahay, S. Kim, F. Revilla, A. Espay.
Mov Disord. 2011 Aug 15;26(10):1859-63

Essential Tremor Quantification During Activities Of Daily Living

D. Heldman, J. Jankovic, D. Vaillancourt, J. Prodoehl, R. Elble, J. Giuffrida
Parkinsonism Relat Disord. 2011 Aug;17(7):537-42

Kinematic Optimization Of Deep Brain Stimulation Across Multiple Motor Symptoms In Parkinson’s Disease

T. Mera, J. Vitek, J. Alberts, J. Giuffrida
J Neurosci Methods. 2011 Jun 15;198(2):280-6

Correlation Between Kinesia System Assessments And Clinical Tremor Scores In Patients With Essential Tremor

M. Giovanni, J. Giuffrida, O. Adam, A. Davidson, J. Jankovic
Mov Disord. 2010 Sep 15;25(12):1938-43

Gender Differences In Onset Timing And Activation Of The Muscles Of The Dominant Knee During Stair Climbing

P. Sung, D. Lee
Knee. 2009 Oct;16(5):375-80

Clinically Deployable Kinesia Technology For Automated Tremor Assessment

J. Giuffrida, D. Riley, B. Maddux, D. Heldman
Mov Disord. 2009 Apr 15;24(5):723-30

Upper-Extremity Stroke Therapy Task Discrimination Using Motion Sensors And Electromyography

J. Giuffrida, A. Lerner, R. Steiner, J. Daly
IEEE Trans Neural Syst Rehabil Eng. 2008 Feb;16(1):82-90

Presentations & Posters

Real-World Evidence for a Smartwatch-based Parkinson’s Motor Assessment App in Patients Undergoing Therapy Changes

A. Hadley, D. Riley, D. Heldman.
Movement Disorders Society Virtual Meeting 2020

Smartphone-based context awareness to improve ambulatory Parkinson’s monitoring

A. Hadley, B. Walter, A. Espay, D. Heldman
Movement Disorders Society Virtual Meeting 2020
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The Impact Of A Wearable Device On Parkinson’s Disease Motor Symptom Management In Patients Starting Rotigotine Transdermal Patch

S. Isaacson, B. Boroojerdi, K. Klos, S. Carson, M. Markowitz, D. Heldman, M. Phillips, D. Terricabras, F. Woltering, D. Truong.
Movement Disorders Society Annual Meeting, 2018, Hong Kong.

Wearable Motion Quantification And Electronic Diaries For Long-Term Monitoring Of Parkinson’s Disease

A. Hadley, E. Urrea-Mendoza, N. Mennucci, C. Zimmerman, J. Giuffrida, Z. Mari, M. Burack, I. Itin, F. Revilla, D. Heldman.
70th Annual Meeting of the American Academy of Neurology, Los Angeles, CA, 2018

Using Objective Measurement Via Wearable Sensors To Evaluate Real-World Effectiveness Of Carbidopa/Levodopa Enteral Suspension For Managing Motor Fluctuations: PROviDE Study Design And Baseline Characteristics

R. Pahwa, R. Dorsey, I. Pan, S. van Norman, T. Marshall, D. Heldman, Y. Jalundhwala.
70th Annual Meeting of the American Academy of Neurology, Los Angeles, CA, 2018

Telehealth Management Of Parkinson’s Disease Using Wearable Sensors: An Exploratory Study

Dustin Heldman, Denzil Harris, Timothy Felong, Kelly Andrzejewski, E. Ray Dorsey, Joseph Giuffrida, Barry Goldberg, Michelle Burack

69th Annual Meeting of the American Academy of Neurology, Boston, MA, 2017

Reliability Of Continuous Parkinson’s Assessment Using Wearables

Dustin Heldman, Enrique Urrea Mendoza, Nicola Mennucci , Carol Zimmerman, Joseph Giuffrida, Zoltan Mari, Michelle Burack, Fredy J. Revilla

69th Annual Meeting of the American Academy of Neurology, Boston, MA, 2017

Wearable Sensors And Decision Algorithms For Advanced Therapy Referral In Parkinson’s Disease.

Heldman, D.A., Giuffrida, J.P., Cubo, E.

Movement Disorders Society Annual Meeting, 2016, Berlin, Germany.

Reliability And Responsiveness Of In-Clinic And At-Home App-Based Bradykinesia Assessment.

Heldman, D.A., Urrea Mendoza, E, Lovera, L.C., Schmerler, D.A., Giuffrida, J.P., Espay, A. J., Garcia, J.X.O., Mohammad, M.E., McFarlane, M.C.U., Fernandez, H.H.

Movement Disorders Society Annual Meeting, 2016, Berlin, Germany.

Advanced Therapy Referral In Parkinson’s Disease Using Wearable Sensors

Heldman, DA., Giuffrida, J.P., Cubo, E.

68th Annual Meeting of the American Academy of Neurology, Vancouver, BC, 2016

Pilot Study To Evaluate Transcranial Direct Current Stimulation (TDCS) During Sleep For The Treatment Of Parkinson’s Disease

D.A. Heldman, C.L. Pulliam, L.M. Blassucci, J.P. Giuffrida, C.L. Comella

Movement Disorders Society Annual Meeting, 2015, San Diego, CA

Continuous Motion Sensor Assessment Of Parkinson’s Disease During Activities Of Daily Living

C.L. Pulliam, D.A. Heldman, M.A. Burack, T.O. Mera

Movement Disorders Society Annual Meeting, 2015, San Diego, CA

Wearable Sensors For Quantifying Deep Brain Stimulation Washout Effects On Gait In Parkinson’s Disease

D.A. Heldman, E.B. Brokaw, A.J. Espay, F.J. Revilla, D.E. Riley, T.O. Mera, J.P. Giuffrida, B.L. Walter

Movement Disorders Society Annual Meeting, 2015, San Diego, CA

Computer-Guided Deep Brain Stimulation Programming Using Automated Motion Sensor-Based Functional Mapping

D.A. Heldman, C.L. Pulliam, E. Urrea Mendoza, M. Gartner, J.P. Giuffrida, E.B. Montgomery, F.J. Revilla

Movement Disorders Society Annual Meeting, 2015, San Diego, CA

Continuous Motion Sensor Assessment Of Parkinson’s Disease During Activities Of Daily Living

C Pulliam, D Heldman, E Brokaw, M Burack, T Mera
67th Annual Meeting of the American Academy of Neurology, Washington, DC, 2015

Prospective, Comparative Study On Cost-Effectiveness Of Home-Based Motor Monitoring System And Office-Based Medical Assessment In Advanced Parkinson´S Disease

E Cubo Delgado, N Mariscal-Pérez, B Solano, V Becerra, J Arribas
67th Annual Meeting of the American Academy of Neurology, Washington, DC, 2015

Evaluation Of A Clinician Worn Device For The Quantitative Assessment Of Abnormal Muscle Tone Type And Severity

E Brokaw, I Itin, D Heldman, J Giuffrida, E Montgomery
67th Annual Meeting of the American Academy of Neurology, Washington, DC, 2015

Methodology For A Symptomatic Impact Study Using A Portable Essential Tremor Monitor To Direct Therapeutic Interventions

P Vittal, C Pulliam, C Goetz, J Jankovic, J Ramirez-Castaneda, D Heldman
18th International Congress of Parkinson’s Disease and Movement Disorders, Stockholm, Sweden, 2014

Automated Deep Brain Stimulation Programming Using Motion Sensors

C Pulliam, E Mendoza, M Gartner, T Orcutt, F Revilla, E Montgomery, J Vitek, J Giuffrida, T Mera, D Heldman
18th International Congress of Parkinson’s Disease and Movement Disorders, Stockholm, Sweden, 2014

Motion Sensor Dyskinesia Assessment During Activities Of Daily Living

C Pulliam, M Burack, J Giuffrida, T Mera
18th International Congress of Parkinson’s Disease and Movement Disorders, Stockholm, Sweden, 2014

Quantifying Abnormal Muscle Tone Due To Neurological Impairment

E. Brokaw
Midwest American Society of Biomechanics Regional Meeting. Akron, Ohio. 2014

Wearable Sensors For Quantifying Deep Brain Stimulation Washout Effects On Gait In Parkinson’s Disease

E. Brokaw, T. Mera, D. Riley, B. Walter, A. Espay, F. J. Revilla, J. Giuffrida, D. Heldman

66th  Annual Meeting of the American Academy of Neurology, Philadelphia, PA, 2014

Motion Sensor Dyskinesia Assessment During Activities Of Daily Living

C. Pulliam, M. Burack, J. Giuffrida, T. Mera

66th Annual Meeting Of The American Academy Of Neurology, Philadelphia, PA, 2014

Deep Brain Stimulation Programming In Parkinson’s Disease Using Functional Motor Symptom Response Tuning Maps

T. Mera, J. Vitek, J. Giuffrida
65th Annual Meeting of the American Academy of Neurology, San Diego, CA, 2013

Continuous Home Monitoring Of Essential Tremor Using Motion Sensors

C. Pulliam, S. Eichenseer, C. Goetz, O. Waln, C. Hunter, J. Jankovic, D. Vaillancourt, J. Giuffrida, and D. Heldman

65th Annual Meeting of the American Academy of Neurology, San Diego, CA, 2013

Test-Retest Reliability Of A Parkinson’s Disease Monitoring System

Dustin Heldman, Alberto Espay, Peter LeWitt, and J. Giuffrida
65th Annual Meeting of the American Academy of Neurology, San Diego, CA, 2013

Deep Brain Stimulation Programming In PD Using Functional Motor Symptom Response Tuning Maps

T. Mera, Vitek J, J. Giuffrida
International Conference on Deep Brain Stimulation. Dusseldorf, Germany, 2013

Effect Of Unilateral And Bilateral STN Stimulation And Levodopa On Distal And Proximal Alternating Movement Of The Upper Limb In Parkinson’s Disease

Radics P, Erőss L, Takáts A, Heldman D, Giuffrida J, Entz L, Fabó D, Tamás G
International Conference on Deep Brain Stimulation. Dusseldorf, Germany, 2013

Deep Brain Stimulation Programming In Parkinson’s Disease Using Functional Motor Symptom Response Tuning Maps

T. Mera, J. Vitek, J. Giuffrida
17th International Congress of Parkinson’s Disease and Movement Disorders. Sydney, Australia, 2013

Tremor Retrainment As Therapeutic Strategy For Patients With Psychogenic Tremor: A Proof-Of-Concept Study

A. Espay, G. Oggioni, M. Edwards, N. Phielipp, H. Gonzalez-Usigli, C. Pecina, D. Heldman, J. Mishra, A. Lang
17th International Congress of Parkinson’s Disease and Movement Disorders. Sydney, Australia, 2013

Bradykinesia And Timed Up And Go Are Improved After Dynamic Cycling In Parkinson’s Disease

R. Phillips, K. Wilson, B. Walter, A. Ridgel
3rd World Parkinson Congress. Montreal, Canada, 2013

Home-Based Motion Sensor Monitoring For Parkinson’s Disease Clinical Trials

D. Heldman, A. Espay, P. LeWitt, J. Giuffrida
3rd World Parkinson Congress. Montreal, Canada, 2013

Quantitative Motor Assessment Of Gait And Lower Extremity Bradykinesia Following The Discontinuation Of Deep Brain Stimulation

T. Mera, D. Riley, B. Walter, A. Espay, F. Revilla, J. Giuffrida
3rd World Parkinson Congress. Montreal, Canada, 2013

Intra- And Multi-Day Home-Based Monitoring Of Parkinson’s Disease Motor Symptoms

D. Heldman, D. Filipkowski, A. Espay, Jaya Mishra,J. Giuffrida
American Academy of Neurology 64th Annual Meeting, New Orleans, LA 2012

Capturing Choreatic Dyskinesia Over Levodopa Dose Cycle In Parkinson’s Disease

T. Mera, Michelle Burack, MD, PhD, Frank Bonsignore, MS, J. Giuffrida, PhD
American Academy of Neurology 64th Annual Meeting, New Orleans, LA 2012

Patient Compliance With Parkinson’s Disease Home Monitoring System

Danielle Filipkowski, Dustin Heldman, Alberto Espay, Jaya Mishra, Thomas Mera, and J. Giuffrida
American Academy of Neurology 64th Annual Meeting, New Orleans, LA 2012

Logarithmic Relationship Between Head Tremor And 5-Point Tremor Rating

Rodger Elble, MD PhD, Helge Hellriegel, MD, Jan Raethjen, MD and Günther Deuschl, MD

International Congress Of Parkinson’s Disease And Movement Disorders, Toronto, CA 2011

Amplitude Fluctuations In Essential Tremor: A Prospective Study

Mostile G, Fekete R, J. Giuffrida, Yaltho T, Davidson A, Nicoletti A, Zappia M, J. Jankovic
International Congress of Parkinson’s Disease and Movement Disorders, Toronto, CA 2011

Automated Parkinson’s Disease Gait And Balance Assessment For Optimization Of Deep Brain Stimulation

T. Mera, D. Filipkowski, Riley R, Walter B, Gunzler S, J. Giuffrida
International Congress of Parkinson’s Disease and Movement Disorders, Toronto, CA 2011

Ergonomic And Human Interface Design Factors For Home-Based Medical Devices In Movement Disorders

D. Filipkowski, T. Mera, D. Heldman, J. Giuffrida
International Congress of Parkinson’s Disease and Movement Disorders, Toronto, CA 2011

Quantitative Home-Based Monitoring Of Parkinson’s Disease Motor Symptoms

D. Heldman, T. Mera, A. Espay, Payne M, J. Giuffrida
International Congress of Parkinson’s Disease and Movement Disorders, Toronto, CA 2011

Differential Response Of Speed, Amplitude, And Rhythm To Dopaminergic Medications In Parkinson’s Disease

A. Espay, D. Heldman, Robert Chen, Sang-jin Kim, Jennifer E. Vaughan, Emily Dunn, Andrew P. Duker,J. Giuffrida
Presented at the 2010 American Academy of Neurology Annual Meeting

Automated Optimization Of Deep Brain Stimulation Settings Across Multiple Parkinson’s Disease Motor Symptoms

Joseph P. Giuffrida, Jay L. Alberts, Jerrold Vitek, T. Mera
Presented at the 2010 American Academy of Neurology Annual Meeting

Effects Of Pedaling Rate On Upper Extremity Motor Improvements During Passive Leg Cycling In Parkinson’s Disease

A.L. Ridgel, M.D. Muller, C-H. Kim, E.J. Fickes, K. Wilson, T. Mera and J. L. Alberts
Presented at the 2009 Society for Neuroscience Annual Meeting

Automated Parkinson’s Disease Motor Assessment For Clinical And Ambulatory Monitoring

D. Heldman, Ph.D., A. Espay, M.D., Peter LeWitt, M.D.,J. Giuffrida, Ph.D.
Presented by the 2009 World Federation of Neurology World Congress on Parkinson’s Disease and Related Disorders

ParkinTune: Automated Parkinson’s Disease Motor Assessment For DBS Programming

T. Mera, MS, Jerrold Vitek, MD, PhD, Jay Alberts, PhD,J. Giuffrida
Presented by the 2009 World Federation of Neurology World Congress on Parkinson’s Disease and Related Disorders

Differential Response Of Bradykinesia And Hypokinesia To Levodopa In Parkinson’s Disease

A. Espay, J. Giuffrida, Robert Chen, Jennifer E. Vaughan, Andrew P. Duker, D. Heldman
Presented at the 2009 World Federation of Neurology World Congress on Parkinson’s Disease and Related Disorders

Comparison Of Kinesia To The Unified Parkinson’s Disease Rating Scale: Tremor And Bradykinesia Results

D. Heldman, Ph.D., David E. Riley, M.D., Brian N. Maddux, M.D., Ph.D.,J. Giuffrida, Ph.D.
Presented at the 2008 American Academy of Neurology Annual Meeting

Kinematic Akinesia Feature Extraction Using Kinesia

D. Heldman, Ph.D., David E. Riley, M.D., Brian N. Maddux, M.D., Ph.D.,J. Giuffrida, Ph.D.
Presented at the 2008 12th International Congress of Parkinson’s Disease and Movement Disorders

Correlation Between Clinical Rating Of Parkinsonian And Essential Tremor And Quantitative Assessments

L. Giselle Aguilar, M.D.,J. Giuffrida, Ph.D., D. Heldman, Ph.D., Joseph Jankovic, M.D.
Presented at the 2008 12th International Congress of Parkinson’s Disease and Movement Disorders