537,140 JANSON P.O. /red./ XXI Scandinavian Congress of Obstetrics and Gynecology. Gothenburg, Sweden, June 8 - 12, 1980. Plenary lecture and abstracts of short communications and poster presentations Ed-s: I. Jansson, P. 0. Janson and L. Hamber-ger. Goteborg 1980 Scandinavian Association of Obstetricians and Gynecologists 8 s. 103, il. Acta Obstetricia et Gynecologica Scandinavica, suppl. 93