[1] Oregon Hlth & Sci Univ, Sch Med, Portland, OR USA
[2] NEW YORK MED COLL, DEPT DERMATOL, NEW YORK, NY USA
[3] Oregon Hlth & Sci Univ, Dept Dermatol, Portland, OR USA
[4] Oregon Hlth & Sci Univ, Knight Canc Inst, Biostat Shared Resource, Portland, OR USA