Capsule Endoscopy
www.asge.org/PatientInfoIndex.aspx?id=390
Colonoscopy
www.asge.org/PatientInfoIndex.aspx?id=382
ERCP
www.asge.org/PatientInfoIndex.aspx?id=386
Esophageal Dilation
www.asge.org/PatientInfoIndex.aspx?id=392
Esophageal Manometry
www.nlm.nih.gov/medlineplus/ency/article/003401.htm
pH monitoring
www.nlm.nih.gov/medlineplus/ency/article/003401.htm