Name	Info	Provider	Link
	subscription/membership/fee required	Elsevier Science	https://linkinghub.elsevier.com/retrieve/pii/S1388-2457(20)30358-8
Parkinson's Disease	free resource	MedlinePlus Health Information	https://medlineplus.gov/parkinsonsdisease.html
Full text from	free resource	Zurich Open Access Repository and Archive	https://doi.org/10.5167/uzh-192439
	subscription/membership/fee required	ClinicalKey	https://www.clinicalkey.com/content/playBy/pii?v=S1388-2457(20)30358-8