gastroesophageal reflux disease. close-up of stomach with gerd

039 abdomen abdominal ache acid anatomy bad barrett body breath breathing cardia care chronic concept condition diagram digestion digestive disease esophageal esophagitis esophagus gas gastric gastritis gastroesophageal gastrointestinal gerd health healthy heartburn human illustration indigestion inflammation infographic internal medical medicine pain problem problems reflux regurgitation science sphincter stomach stricture symptoms system treatment ulcer valve vector