The PRECISE (PREgnancy Care Integrating translational Science, Everywhere) Network's first protocol: deep phenotyping in three sub-Saharan African countries by von Dadelszen, P, Flint-O'Kane, M, Poston, L, Craik, RH, Russell, D, Tribe, RM, d'Alessandro, U, Roca, A, Jah, H, Temmerman, M, Koech Etyang, A, Sevene, E, Chin, P, Lawn, JE, Blencowe, H, Sandall, J, Salisbury, TT, Barratt, B, Shennan, AH, Makanga, PT, Magee, LA, PRECISE Network