Innate immunity in human newborn infants: prematurity means more than immaturity. - Strunk T; Currie A; Richmond P; Simmer K; Burgner D (The journal of maternal-fetal & neonatal medicine : the official journal of the European Association of Perinatal Medicine, the Federation of Asia and Oceania Perinatal Societies, the International Society of Perinatal Obstetricians, 2011)