- eMedicine - Gastritis and Peptic Ulcer Disease - Dr. Philip Shayne describes causes, symptoms, and common treatments.
- eMedicine: Chronic Gastritis - Review a physician's report on the symptoms, such as stomach pain, nausea, vomiting, anorexia, and weight loss. Learn the causes including gastroesophageal reflux disease (GERD), infection, diet, and alcohol abuse.
- Mayo Clinic: Hiatal Hernia - A description of the disease plus complications, risk factors, diagnosis, and treatment.
- MindXpansion - Informative site about gastritis, what it is, the symptoms, causes, causes and prevention.
- The Pyloric Sphincteric Cylinder in Health and Disease - A full medical textbook on the stomach and pylorus, with topics on their physiology, anatomy and various pathologies.