The Young Women’s Health CoOp in Cape Town, South Africa: Study protocol for a cluster-randomised trial for adolescent women at risk for HIV oleh Wendee M. Wechsberg, Felicia A. Browne, Tara Carney, Bronwyn Myers, Alexandra Minnis, Robert MacDonald, Jacqueline W. Ndirangu, Leslie B. Turner, Brittni N. Howard, Nathaniel Rodman