Pondy Ongotsoyi, Angèle Hermine, Ndi Kenn Chi, Bernadette Ngo Nonga, and Paul Olivier Koki Ndombo. “ Yaounde”. HEALTH SCIENCES AND DISEASE 20, no. 6 (October 14, 2019). Accessed April 27, 2024. https://hsd-fmsb.org/index.php/hsd/article/view/1656.