TY - GENERIC DO - 10.20944/preprints202001.0025.v1 UR - http://dx.doi.org/10.20944/preprints202001.0025.v1 TI - The Pathogenesis of Duodenal Ulcer and the Role of Helicobacter pylori in This Disease: A Systematic Review T2 - Preprints AU - Dong, Simon Xin Min AU - Rowe, Katelynn Jean AU - Chang, Connie Ching Yuen PY - 2020 DA - 2020/01/03 PB - Preprints