EXCERPTA MEDICA, INTERNATIONAL 528,750 CONGRESS SERIES nr 276 X World Congress of Otarhinolaryngology. Venice,May 21-25.1973. Org, by the Societa Italiana di Otorinolaryngologia e di Patologia Cervice-Facciale,member of the IFOS... Abstracts.Ed. : M.Arslan in callab. with V.Ricci and D.P.N.Harrison. Amsterdam 1973 Excerpta Medica 8° s. nlb. VII, nlb. 1. 330. Excerpta Medica International Congress Series nr 276