TY - BOOK AU - AU - ED - ED - ED - ED - TI - : The international source of the best available evidence for effective health care SN - 727914987 SN - 146238462 PY - 2001///46 CY - London PB - BMJ Publishing Group KW - KW - 2 KW - 0 KW - 6 KW - 20 N1 - 5 ER -