196,537 ABSTRACTS Abstracts of papers. Presented at the 39th Congress of the Nordisk Kirurgisk Forening. Turku, Finland 7-9 June, 1979. Ed. by S. J. Viikari [et al.] Stockholm 1979 4° s. nlb. 2, XV, nlb. 1, 15l Acta Chirurgica Scandinavica, suppl. 493