B. Kenfack, J. Ateudjieu, F. Ymele, P. Tebeu, J. Dohbit, and R. Mbu, “Does the Advice to Assume the Knee-Chest Position at the 36th to 37th Weeks of Gestation Reduce the Incidence of Breech Presentation at Delivery?”, Clin. Moth. Chil. Health, vol. 9, no. 1, Oct. 2012.