human stomach. gastroesophageal reflux disease. gerd, heartburn, gastric infographic. acid moving up into the esophagus.

abdomen ache acid acidity anatomy body cancer cartoon constipation diagram diarrhea digestion digestive disease donation esophageal esophagus flat flora gas gastric gastritis gastroesophageal gastrointestinal gastrology gerd health heartburn human indigestion inflammation infographic jejunum logo medical medicine organ pain pregnancy problem reflux sick stomach stomachache symptoms tract ulcer urinary vector