AU - Rivara FP TI - REgistration of clinical trials PT - JOUR DP - 2005 TA - Archives of Pediatrics & Adolescent Medicine pages = {685}, VI - 159 IP - 7 AID - 10.1001/archpedi.159.7.685 [doi] 4100 - http://dx.doi.org/10.1001/archpedi.159.7.685 SO - Archives of Pediatrics & Adolescent Medicine July 1, 2005 159(7):685