Effects of injectable contraception with depot medroxyprogesterone acetate or norethisterone enanthate on estradiol levels and menstrual, psychological and behavioral measures relevant to HIV risk: The WHICH randomized trial. - Singata-Madliki, Mandisa; Smit, Jenni; Beksinska, Mags; Balakrishna, Yusentha; Avenant, Chanel; Beesham, Ivana; Seocharan, Ishen; Batting, Joanne; Hapgood, Janet P.; Hofmeyr, G. Justus (PLoS ONE, 2024)