Scale up of PrEP integrated in public health HIV care clinics: a protocol for a stepped-wedge cluster-randomized rollout in Kenya oleh Kenneth K. Mugwanya, Elizabeth Irungu, Elizabeth Bukusi, Nelly R. Mugo, Josephine Odoyo, Elizabeth Wamoni, Kenneth Ngure, Jennifer F. Morton, Kathryn Peebles, Sarah Masyuko, Gena Barnabee, Deborah Donnell, Ruanne Barnabas, Jessica Haberer, Gabrielle O’Malley, Jared M. Baeten, for the Partners Scale Up Team