Name	Info	Provider	Link
	free resource	Elsevier Science	https://linkinghub.elsevier.com/retrieve/pii/S0092-8674(19)31121-3
Older Adult Health	free resource	MedlinePlus Health Information	https://medlineplus.gov/olderadulthealth.html
Cited by Patents in	free resource	The Lens - Patent Citations	https://www.lens.org/lens/search/patent/list?q=citation_id:31675495
	free resource	Spiral, Imperial College Digital Repository	http://hdl.handle.net/10044/1/74383