Simo, J. H., P. Foumane, N. U. E. Meka, J. S. Dohbit, F. Essiben, and E. T. Mboudou. “The Impact of Sexual Activity During the Third Trimester of Pregnancy on Labor Outcome in Nulliparous Women”. International Journal of Reproduction, Contraception, Obstetrics and Gynecology, vol. 9, no. 4, Mar. 2020, pp. 1442-7, doi:10.18203/2320-1770.ijrcog20201202.