title: Developmental field theory and observations--accidental progress?
authors.affiliation: Department of Medical Genetics, Shodair Children's Hospital, Helena, Montana 59604.
authors.forename: J M
authors.initials: JM
authors.lastname: Opitz
mesh_terms: D000013:Congenital Abnormalities / Q000453:epidemiology* / Q000209:etiology / Q000235:genetics; D006801:Humans