AU - Rautava L, Eskelinen J, Häkkinen U, Lehtonen L, PERFECT Preterm Infant Study Group a TI - 5-year morbidity among very preterm infants in relation to level of hospital care PT - JOUR DP - 2013 TA - JAMA Pediatrics pages = {40-46}, VI - 167 IP - 1 AID - 10.1001/jamapediatrics.2013.415 [doi] 4100 - http://dx.doi.org/10.1001/jamapediatrics.2013.415 SO - JAMA Pediatrics January 1, 2013 167(1):40