Ключевые слова: abdomen, abdominal, ache, acid, appendicitis, asian, background, bacterial, belly, body, bowel, cancer, colon, concept, constipation, diarrhea, disease, dyspepsia, gastric, gastritis, h pylori bacteria, health, helicobacter pylori, human, illness, indigestion, inflammation, isolated, man, medical, nausea, pain, painful, pancreatitis, people, peptic ulcer, period, person, problem, reflux, sick, sickness, stomach, stomach ache, stomachache, suffer, ulcer in stomach, white, young,