Delmée, M., Debongnie, JC., Warzee, P., & Mainguet, P. (1987). [An Original Method of Bacterial Sampling for the Study of Campylobacter-pylori in Duodenal-ulcer]. Gastroenterologie Clinique et Biologique, 11(8-9), 550-553. https://hdl.handle.net/2078.5/140319 (Original work published 1987)