Ankouane Andoulo, F., G. Ngatcha, M. Tagni-Sartre, M. Biwolé Sida, and E. 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, vol. 16, no. 4, Dec. 2015, doi:10.5281/hsd.v16i4.589.