Name	Info	Provider	Link
	free resource	Elsevier Science	https://linkinghub.elsevier.com/retrieve/pii/S0104-42302011000400017
HIV	free resource	MedlinePlus Health Information	https://medlineplus.gov/hiv.html
	free resource	Scientific Electronic Library Online	https://www.scielo.br/scielo.php?script=sci_arttext&pid=S0104-42302011000400017&lng=en&nrm=iso&tlng=en