Mobile Health Intervention Tools Promoting HIV Pre-Exposure Prophylaxis Among Adolescent Girls and Young Women in Sub-Saharan Africa: Scoping Review - Alex Emilio Fischer; Homaira Hanif; Jacob B Stocks; Aimee E Rochelle; Karen Dominguez; Eliana Gabriela Armora Langoni; H Luz McNaughton Reyes; Gustavo F Doncel; Kathryn E Muessig (JMIR mHealth and uHealth)