Association between substance use and PrEP adherence among adolescent girls and young women enrolled in an HIV prevention study in Southern Africa - Kudzai Hlahla; Rahul Paul Choudhury; Bekezela Siziba; Peter L. Anderson; Sinead Delany-Moretlwe; Theodorah Rirhandzu Ndzhukule; Sybil Hosek; Nyaradzo M. Mgodi; for the on behalf of the HPTN 082 Study Team (PLOS Global Public Health)