Prevalence of Helicobacter pylori genotypes: cagA, vacA (m1), vacA (s1), babA2, dupA, iceA1, oipA and their association with gastrointestinal diseases. A cross-sectional study in Quito-Ecuador

幽门螺杆菌基因型：cagA、vacA (m1)、vacA (s1)、babA2、dupA、iceA1、oipA 的患病率及其与胃肠道疾病的关系。基多-厄瓜多尔的横断面研究