“…(2) The evidence for the diagnosis on the certificate has been assessed by a questionnaire addressed to the certifier (McKenzie, 1956;Morris, 1964;Moriyama, Baum, Haenszel, and Mattison, 1958); (3) The wording of the death certificate has been compared with the clinical diagnosis obtained from a study of clinical case notes (MacDonald, 1938;Dorn and Horn, 1941;Alderson, 1965).…”