title: Introduction.
authors.affiliation: Children's Mercy Hospital, University of Missouri Kansas City, School of Medicine, Kansas City, MO.
authors.forename: William E
authors.initials: WE
authors.lastname: Truog
authors.affiliation: Eunice Kennedy Shriver National Institute of Child Health, Human Development, National Institutes of Health, Bethesda, MD.
authors.forename: Rosemary D
authors.initials: RD
authors.lastname: Higgins
mesh_terms: D035843:Biomedical Research / Q000639:trends; D002986:Clinical Trials as Topic; D006801:Humans; D007231:Infant, Newborn; D007255:Information Services / Q000639:trends; D009359:Neonatology / Q000639:trends