TY - STAND AU - C. Black AU - J. Kaye AU - H. Jick BT - Bmj M1 - 7361 PY - 2002 SP - 419 EP - 21 T2 - Bmj TI - Relation of childhood gastrointestinal disorders to autism: nested case-control study using data from the UK General Practice Research Database VL - 325 SN - 0959-8138 ER -