Ankouane Andoulo, F, G Ngatcha, M Tagni-Sartre, M Biwolé Sida, and EC Ndjitoyap Ndam. “Helicobacter Pylori Infection and Peptic Ulcer Disease in Children and Adolescents from the Age Range of 6 to 18 Years Old in Yaounde (Cameroon)”. HEALTH SCIENCES AND DISEASE 16, no. 4 (December 8, 2015). Accessed June 19, 2024. https://www.hsd-fmsb.org/index.php/hsd/article/view/589.