title: Hans-Rudolf Wiedemann: an appreciation.
authors.affiliation: Shodair Hospital, Helena, MT 59604.
authors.forename: J M
authors.initials: JM
authors.lastname: Opitz
authors.forename: P
authors.initials: P
authors.lastname: Mullen
mesh_terms: D000013:Congenital Abnormalities / Q000235:genetics*; D005826:Genetics, Medical / Q000266:history; D005858:Germany; D049673:History, 20th Century; D006801:Humans