Name	Info	Provider	Link
	subscription/membership/fee required	Elsevier Science	https://linkinghub.elsevier.com/retrieve/pii/S0167-6296(16)30332-0
Choosing a Doctor or Health Care Service	free resource	MedlinePlus Health Information	https://medlineplus.gov/choosingadoctororhealthcareservice.html
	free resource	scite Smart Citations	https://scite.ai/reports/27792903
	free resource	Spiral, Imperial College Digital Repository	http://hdl.handle.net/10044/1/42070