title: Reprise and lyrics for another chorus.
authors.affiliation: Clinical Epidemiology Unit, Yale University School of Medicine, New Haven, CT 06510.
authors.forename: A R
authors.initials: AR
authors.lastname: Feinstein
mesh_terms: D015982:Bias; D003141:Communicable Diseases / Q000453:epidemiology; D003644:Death Certificates; D004812:Epidemiologic Methods; D006801:Humans; D007231:Infant, Newborn; D008433:Mathematics; D010102:Oxygen Inhalation Therapy / Q000009:adverse effects; D012107:Research Design / Q000592:standards; D012178:Retinopathy of Prematurity / Q000209:etiology