Assessing the effectiveness of care for very low birth weight infants--do we really need population-based data?
Heinonen
K M
KM
Children's Hospital, University of Kuopio, Finland.
D006801:Humans; D007226:Infant Mortality; D007230:Infant, Low Birth Weight; D007231:Infant, Newborn; D015931:Intensive Care, Neonatal