title: 50 Years Ago in The Journal of Pediatrics: A Valved Mask for Respiratory Studies in the Neonate.
authors.affiliation: Department of Pediatrics, University of Vermont College of Medicine, Burlington, Vermont.
authors.forename: Roger F
authors.initials: RF
authors.lastname: Soll
mesh_terms: D049673:History, 20th Century; D006801:Humans; D007231:Infant, Newborn; D008397:Masks / Q000266:history*; D010372:Pediatrics / Q000266:history*; D010506:Periodicals as Topic / Q000266:history; D012129:Respiratory Function Tests / Q000266:history* / Q000295:instrumentation*