The ATN, which was created in 2001, involves study participants between the ages of 12-24 for projects addressing primary prevention interventions and the HIV continuum of care. See a searchable list of publications from 2005-present that resulted from these studies here.
The REACH Project
The Reaching for Excellence in Adolescent Care and Health (REACH) project was an adolescent HIV study that enrolled participants aged 12-18 in the mid-to-late 1990s. See a list of REACH project-related scientific publications between the years of 1998-2013 here.