Cancer prevention This volume contains the main proceedings of the fourth international conference on Cancer Prevention 2006 which was held during February 16 18 2006 in St. Gallen Switzerland. Written by international experts in the field the book comprises a comprehensive update on the most recent developments in the upsurging fields of molecular biology and cancer genetics and their interactions with clinical epidemiology and cancer prevention at various levels. This volume contains the main proceedings of the fourth international conference on Cancer Prevention 2006 which was held during February 1618 2006 in St. Gallen Switzerland. Written by international experts in the field the book comprises a comprehensive update on the most recent developments in the upsurging fields of molecular biology and cancer genetics and their interactions with clinical epidemiology and cancer prevention at various levels: genetic biologic predisposition and definition of high risk groups; preclinical models and tumor prevention; prospects of surroga