TI - THe railway PT - JOUR DP - 2013 TA - JAMA Pediatrics pages = {213}, VI - 167 IP - 3 AID - 10.1001/jamapediatrics.2013.222 [doi] 4100 - http://dx.doi.org/10.1001/jamapediatrics.2013.222 SO - JAMA Pediatrics March 1, 2013 167(3):213