Hortence FJ, Ymele Fouelifack F, Tsuala Fouogue J, Tetka Tetka T.
Associations between the Grade of Placental Maturity at Third Trimester Ultrasound and Maternofetal Outcomes at the Maternity of the Yaoundé Central Hospital: A Prospective Cohort Study. 
Donald School J Ultrasound Obstet Gynecol 
2015;
9
(3):230-233.