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S1
Everhart, J. Digestive Diseases and Diabetes. Chapter 21 [pp 474-476]. NIDDK [On-line information]. Available FTP: http://www.niddk.nih.gov/health/diabetes/dia/chpt21.pdf

S2
Merck. Malabsorption Syndromes, [General] [19 paragraphs]. The Merck Manual of Diagnosis and Therapy [On-line information]. Available FTP: http://www.merck.com/pubs/mmanual/section3/chapter30/30a.htm

S3
National Digestive Diseases Information Clearinghouse. ERCP (Endoscopic Retrograde Cholangiopancreatography). Available FTP: http://digestive.niddk.nih.gov/ddiseases/pubs/ercp/