Erratum to: 'Interpersonal psychotherapy for depression and posttraumatic stress disorder among HIV-positive women in Kisumu, Kenya: study protocol for a randomized controlled trial'. Issue 1 (December 2016) - Onu, Chinwe; Ongeri, Linnet; Bukusi, Elizabeth; Cohen, Craig; Neylan, Thomas; Oyaro, Patrick; Rota, Grace; Otewa, Faith; Delucchi, Kevin; Meffert, Susan