Additional file 1: of Prevalence and incidence of major depressive disorders among people living with HIV residing in Africa: a systematic review and meta-analysis protocol BignaJean UmLewis AsangbehSerra SibetcheuAurelie KazÊArnaud NansseuJobert 2018 Preferred Reporting Items for Systematic review and Meta-Analysis Protocols Checklist. (DOC 88 kb)