Authors: Fern R Hauck; Stanislaw M Herman; Mark Donovan; Solomon Iyasu; Cathryn Merrick Moore; Edmund Donoghue; Robert H Kirschner; Marian Willinger Journal: Pediatrics Date: 2003-05 Impact factor: 7.124
Authors: R G Carpenter; L M Irgens; P S Blair; P D England; P Fleming; J Huber; G Jorch; P Schreuder Journal: Lancet Date: 2004-01-17 Impact factor: 79.321