[1] Univ Basel, Dept Surg, Kantonsspital Olten, Basel, Switzerland
[2] Univ Pittsburgh, Dept Otolaryngol, Pittsburgh, PA 15260 USA
[3] Univ Pittsburgh, Dept Radiat Oncol, Pittsburgh, PA USA
[4] Univ Pittsburgh, Dept Immunol, Pittsburgh, PA USA
[5] Keio Univ, Sch Med, Dept Surg, Tokyo 160, Japan
[6] Victory Mem Hosp, Dept Surg, Brooklyn, NY USA
[7] Univ Texas MD Anderson Canc Ctr, Dept Gynecol Oncol, Houston, TX 77030 USA
[8] Yale Univ, Sch Med, Dept Surg, New Haven, CT 06510 USA
[9] McLaren Reg Med Ctr, Dept Surg, Flint, MI USA
[10] Calif Pacific Med Ctr, Ctr Melonoma Res & Treatment, Melanoma Program, Calif Pacific Med & Res Inst,Dept Surg, San Francisco, CA 94115 USA