This volume is a report of the proceedings of the Third International Nephro-Lrological Course held in the Ettore Majorana Centre for Scientific Culture, Erice, Sicily, from 12th to 18th May 1980. Contributions were accepted on the understanding that the editors could make certain changes leading towards a uniformity of style but accepting as a Driority the importance of early publi- cation, if necessary at the expense of stylistic perfection. The meeting, directed by A. Vercellone (Torino), R. Maiorca (Brescia) and M. Pavone-Macaluso (Palermo), was sponsored by: the Italian Associations of...