Global, regional, and national levels of maternal mortality, 1990–2015: a systematic analysis for the Global Burden of Disease Study 2015 (Lancet, 2016)

(untitled) - Kassebaum, NJ; Barber, RM; Dandona, L; Hay, SI; Larson, HJ; Lim, SS; Lopez, AD; Mokdad, AH; Naghavi, M; Pinho, C; Steiner, C; Vos, T; et al.