[1] Oregon Hlth & Sci Univ, Dept Family Med, Portland, OR 97239 USA
[2] Oregon Hlth & Sci Univ, Dept Publ Hlth & Prevent Med, Portland, OR 97239 USA
[3] Oregon Hlth & Sci Univ, Dept Med Informat & Clin Epidemiol, Portland, OR 97239 USA
[4] Oregon Hlth & Sci Univ, Dept Med, Portland, OR 97239 USA
[5] Univ Washington, Sch Med, Dept Internal Med, Seattle, WA USA
[6] Univ Washington, Sch Med, Dept Med, Seattle, WA 98195 USA
[7] Pathol Associates Inc, Clovis, CA USA
[8] Dermatopathol Northwest, Bellevue, WA USA
[9] Univ Calif Los Angeles, Dept Pathol, Los Angeles, CA 90024 USA
[10] Inst Curie, Dept Pathol, Paris, France
[11] Univ Penn, Pathol, Philadelphia, PA 19104 USA
[12] Univ Vermont, Family Med, Burlington, VT USA
[13] Geisel Sch Med Dartmouth, Epidemiol & Pediat, Lebanon, NH USA
[14] Dept Vet Affairs Med Ctr, Ctr Dermatoepidemiol, Dermatol & Epidemiol, Providence, RI USA
[15] Rhode Isl Hosp, Dept Dermatol, Providence, RI USA
[16] Brown Univ, Dept Dermatol, Providence, RI 02912 USA
[17] Brown Univ, Dept Epidemiol, Providence, RI 02912 USA
[18] Providence Hlth & Serv Oregon, Providence Canc Ctr, Canc Prevent & Screening, Providence, RI USA