TY - STAND AU - J. Lewis AU - W. Bilker AU - R. Weinstein AU - B. Strom BT - Pharmacoepidemiol Drug Saf DO - 10.1002/pds.1115 M1 - 7 PY - 2005 SP - 443 EP - 51 T2 - Pharmacoepidemiol Drug Saf TI - The relationship between time since registration and measured incidence rates in the General Practice Research Database VL - 14 SN - 1053-8569 (Print) 1053-8569 ER -