Sexual activity during pregnancy and prognosis of labor in Cameroonian women: a cohort study. - Foumane, Pascal; Mboudou, Emile Telesphore; Sama, Julius Dohbit; Baba, Souley; Enama Mbatsogo, Bernard Armand; Ngwana, Lilian (Journal of Maternal-Fetal & Neonatal Medicine, 2014)