title: Measuring gestational age: an uncertain proposition.
authors.affiliation: Department of Pediatrics, Yale University School of Medicine, New Haven, Connecticut 06511.
authors.forename: A T
authors.initials: AT
authors.lastname: Berg
authors.forename: M B
authors.initials: MB
authors.lastname: Bracken
mesh_terms: D001831:Body Temperature / Q000502:physiology; D005314:Embryonic and Fetal Development / Q000502:physiology; D005260:Female; D005865:Gestational Age; D006801:Humans; D008598:Menstruation / Q000502:physiology; D010060:Ovulation / Q000502:physiology; D011247:Pregnancy; D016216:Ultrasonography, Prenatal