Bulstra, Caroline A and Hontelez, Jan A C and Otto, Moritz and Stepanova, Anna and Lamontagne, Erik and Yakusik, Anna and El-Sadr, Wafaa M and Apollo, Tsitsi and Rabkin, Miriam and Atun, Rifat and Bärnighausen, Till (2021) Integrating HIV services and other health services: a systematic review and meta-analysis. PLoS Medicine , 18 , (11) , e1003836.