title: Officers' note--a word of thanks to Beryl Benacerraf.
authors.forename: Harvey L
authors.initials: HL
authors.lastname: Nisenbaum
authors.forename: Carmine M
authors.initials: CM
authors.lastname: Valente
mesh_terms: D049674:History, 21st Century; D006801:Humans; D010506:Periodicals as Topic / Q000266:history / Q000639:trends; D014463:Ultrasonography / Q000266:history