1. Department of Preventive Medicine; Keck School of Medicine; Norris Comprehensive Cancer Center; University of Southern California; Los Angeles; CA
2. Division of Cancer Control and Population Sciences; University of Pittsburgh Cancer Institute; Pittsburgh; PA
3. Genetic Oncology Unit, Complexo Hospitalario Universitario de Vigo (CHUVI), Servicio Galego de Saude (SERGAS); Vigo; Spain