S. Y., T., D. W. A. Leno, M. K. Camara, Y. Hyjazi, and N. Keita. “Knowledge, Attitudes and Practices of Obstetrical Ultrasound in Conakry, Guinea”. International Journal of Reproduction, Contraception, Obstetrics and Gynecology, vol. 6, no. 2, Jan. 2017, pp. 585-90, doi:10.18203/2320-1770.ijrcog20170387.