Menstrual cups and cash transfer to reduce sexual and reproductive harm and school dropout in adolescent schoolgirls: study protocol of a cluster-randomised controlled trial in wes... oleh Garazi Zulaika, Daniel Kwaro, Elizabeth Nyothach, Duolao Wang, Emily Zielinski-Gutierrez, Linda Mason, Alie Eleveld, Tao Chen, Emily Kerubo, Annemieke van Eijk, Cheryl Pace, David Obor, Jane Juma, Boaz Oyaro, Louis Niessen, Godfrey Bigogo, Isaac Ngere, Carl Henry, Maxwell Majiwa, Clayton O. Onyango, Feiko O. ter Kuile, Penelope A. Phillips-Howard