http://digestive.niddk.nih.gov/ddiseases/pubs/gerd/
National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health
Gastroesophageal reflux disease (GERD) is a digestive disorder that affects the lower esophageal sphincter (LES)--the muscle connecting the esophagus with the stomach. Many people, including pregnant women, suffer from heartburn or acid indigestion caused by GERD