Name	Info	Provider	Link
	free resource	Elsevier Science	https://linkinghub.elsevier.com/retrieve/pii/S0002-9394(17)30375-6
Tears	free resource	MedlinePlus Health Information	https://medlineplus.gov/tears.html
	subscription/membership/fee required	ClinicalKey	https://www.clinicalkey.com/content/playBy/pii?v=S0002-9394(17)30375-6
	free resource	scite Smart Citations	https://scite.ai/reports/28887117