Mayo Clinic: Hiatal Hernia
- A description of the disease plus complications, risk factors, diagnosis, and treatment.
- http://www.mayoclinic.com/health/hiatal-hernia/DS00099

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.
- http://www.emedicine.com/med/topic852.htm

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.
- http://med.plig.org/index.html

eMedicine - Gastritis and Peptic Ulcer Disease
- Dr. Philip Shayne describes causes, symptoms, and common treatments.
- http://www.emedicine.com/emerg/topic820.htm

MindXpansion
- Informative site about gastritis, what it is, the symptoms, causes, causes and prevention.
- http://www.mindxpansion.com/balance/gastritis.htm