Cofactors of earlier uptake of modern postpartum family planning methods in Kenya - Nancy M. Ngumbau; Damaris Kimonge; Julia C. Dettinger; Felix Abuna; Ben Odhiambo; Laurén Gómez; Anjuli D. Wagner; Mary M. Marwa; Salphine Watoyi; Emmaculate Nzove; Jillian Pintye; Jared M. Baeten; et al. (PLOS Global Public Health)