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. Author manuscript; available in PMC: 2015 Feb 1.
Published in final edited form as: Pharmacoepidemiol Drug Saf. 2013 Dec 13;23(2):119–127. doi: 10.1002/pds.3552

Figure 1.

Figure 1

Data sources for Parkinson’s Disease Follow-up

AA = African American; CMS = Centers for Medicare and Medicaid Services; ICD-9 = International

Classification of Diseases – Ninth Version; PD = Parkinson’s disease