NORD CARL ERIK /red./ 536,849 Antibiotic associated colitis and clostri dium difficile. A Symposium held at the Swedish Medical Society Stockholm, Sweden August 23.1979. Ed. by Lars Olof Kallings Roland Hollby, Carl Erik Hord. Stockholm 1980 Almqvist and Wiksell 8 s. 52, il. Scandinavian Journal of Infectious Diseases, suppl. 22