This book is based on lectures held at the In- ternational Expert Meeting "Current Update on Psychoimmunology" (September 26-28, 1996, Graz, Austria), which was organized by "Ver- ein zur Forderung der Wissenschaft und For- schung an der Universitatsklinik fUr Psychia- trie Graz" (Chairman: H. -G. Zapotoczky; Coor- dinators: M. Lux, G. Wieselmann; Local Orga- nizing Committee: E. Braun, M. Bretterklieber, H. Hausler, G. Herzog, S. Kriechbaum, S. Sper-...