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Irwin, Richard S. (Nombre personal)
Alpert, J.S. Pulmonary hypertension, 1981: t.p. (Richard S. Irwin, M.D.) p. 6 (dir. Pulmonary Med. Div., assoc. prof. of med. Univ. of Mass. Med. School)
Info. from publ., 06-04-2007: (author has added the additional degree: F.C.C.P.)