title: Preterm Birth as a Calendar Event or Immunologic Anomaly.
authors.affiliation: Division of Neonatal and Developmental Medicine, Department of Pediatrics, Stanford University School of Medicine, Stanford, California2March of Dimes Prematurity Research Center at Stanford University, Stanford, California.
authors.forename: Matthew B
authors.initials: MB
authors.lastname: Wallenstein
authors.affiliation: Division of Neonatal and Developmental Medicine, Department of Pediatrics, Stanford University School of Medicine, Stanford, California2March of Dimes Prematurity Research Center at Stanford University, Stanford, California.
authors.forename: Gary M
authors.initials: GM
authors.lastname: Shaw
authors.affiliation: Division of Neonatal and Developmental Medicine, Department of Pediatrics, Stanford University School of Medicine, Stanford, California2March of Dimes Prematurity Research Center at Stanford University, Stanford, California.
authors.forename: David K
authors.initials: DK
authors.lastname: Stevenson
mesh_terms: D005260:Female; D006801:Humans; D007154:Immune System Diseases / Q000150:complications*; D007231:Infant, Newborn; D011247:Pregnancy; D047928:Premature Birth / Q000209:etiology* / Q000276:immunology; D012307:Risk Factors