Ethics statement
TransViiV study was evaluated and approved by the institutional review board under the number FH-17. The study was carried out following the good clinical practices. All individuals provided a written informed consent before participation in any study procedure. Participation was voluntary. At each visit, participants received a $150 Argentine pesos compensation (approximately, 15 USD at the moment of the study) to cover transportation costs, and a coupon exchangeable for a basic breakfast or meal.