Babigumira, Joseph B; Agutu, Clara A; Hamilton, Deven T; van der Elst, Elise; Hassan, Amin; Gichuru, Evanson; Mugo, Peter Mwangi; Farquhar, Carey; Ndung'u, Thumbi; Sirengo, Martin; Chege, Wairimu; Goodreau, Steven M; Sanders, Eduard J; M Graham, Susan