RT Journal Article SR Electronic T1 The incretin system in the management of type 2 diabetes mellitus JF Clinical Medicine JO Clin Med FD Royal College of Physicians SP 491 OP 495 DO 10.7861/clinmedicine.10-5-491 VO 10 IS 5 A1 Jeffrey W Stephens YR 2010 UL http://www.rcpjournals.org/content/10/5/491.abstract