机构:
Duke Univ, Med Ctr, Canc Prevent Detect & Control Res Program, Durham, NC 27710 USADuke Univ, Med Ctr, Canc Prevent Detect & Control Res Program, Durham, NC 27710 USA
机构:
Univ Calif San Francisco, Sch Med, Dept Epidemiol & Biostat, San Francisco, CA 94143 USAUniv Calif San Francisco, Sch Med, Dept Epidemiol & Biostat, San Francisco, CA 94143 USA