Health service interventions to improve adolescent health and their population in need, coverage and points of delivery as estimated in model.

*Jane Ferguson, Chandra Mouli-V, Department of Maternal, Newborn, Child and Adolescent Health, WHO.±Jesus Maria Garcia Calleja, Technical Officer & Rachel Baggaley Medical Officer, HIV Department, WHO.¥Elisabeth Åhman, formerly WHO staff.∞Annette Verster, Technical Officer, HIV Department, WHO.βDHS (Demographic Health Survey), GHO (Global Health Observatory) & UNAIDS (the Joint United Nations Programme on HIV/AIDS).ΩPMTCT (Preventing Mother-To-Child Transmission (of HIV), PID (Pelvic Inflammatory Disease), HTC (HIV testing and counseling, OST (Opioid Substitution Therapy), IPV (Intimate Partner Violence) & ART (Antiretroviral Therapy).