TY - STAND AU - J. Lewis AU - C. Brensinger AU - W. Bilker AU - B. Strom BT - Pharmacoepidemiol Drug Saf DO - 10.1002/pds.698 M1 - 3 PY - 2002 SP - 211 EP - 8 T2 - Pharmacoepidemiol Drug Saf TI - Validity and completeness of the General Practice Research Database for studies of inflammatory bowel disease VL - 11 SN - 1053-8569 (Print) 1053-8569 ER -