[1] Sahlgrens Univ Hosp, Dept Radiol, S-41345 Gothenburg, Sweden
[2] Univ Gothenburg, Sahlgrenska Acad, Inst Clin Sci Obstet & Gynecol, S-41390 Gothenburg, Sweden
[3] H Lee Moffitt Canc Ctr & Res Inst, Dept Cutaneous Oncol, Tampa, FL USA
[4] Univ South Florida Hlth, Morsani Coll Med, Dept Oncol Sci, Tampa, FL USA