Name	Info	Provider	Link
	subscription/membership/fee required	Elsevier Science	https://linkinghub.elsevier.com/retrieve/pii/S0755-4982(16)00005-1
Parkinson's Disease	free resource	MedlinePlus Health Information	https://medlineplus.gov/parkinsonsdisease.html
	subscription/membership/fee required	Masson (France)	http://www.em-consulte.com/retrieve/pii/S0755-4982(16)00005-1
	free resource	scite Smart Citations	https://scite.ai/reports/27039336