[1] Duke Univ, Med Ctr, Durham, NC 27710 USA
[2] Kings Coll London, Guys & St Thomas Natl Hlth Serv Fdn Trust, St Johns Inst Dermatol, London, England
[3] Stanford Canc Ctr, Stanford, CA USA
[4] Stanford Univ, Stanford, CA 94305 USA
[5] Univ Calif Los Angeles, Los Angeles, CA USA
[6] Univ Texas MD Anderson Canc Ctr, Houston, TX 77030 USA
[7] Peter MacCallum Canc Ctr, Melbourne, Vic, Australia
[8] Univ Melbourne, Melbourne, Vic, Australia
[9] Fox Chase Canc Ctr, Philadelphia, PA 19111 USA
[10] Univ Pittsburgh, Sch Med, Pittsburgh, PA USA
[11] Univ Wisconsin, Madison, WI USA
[12] VA Med Ctr, Madison, WI USA
[13] Leiden Univ, Med Ctr, Leiden, Netherlands
[14] Boston Univ, Boston, MA 02215 USA
[15] Univ Florence, Sch Med, I-50121 Florence, Italy
[16] Univ Turin, Turin, Italy
[17] Univ Complutense, E-28040 Madrid, Spain
[18] Univ Barcelona, IDIBAPS, Hosp Clin, Barcelona, Spain
[19] Hop St Louis, Paris, France
[20] Univ Hosp, U892, Nantes, France
[21] Northwestern Univ, Robert H Lurie Comprehens Canc Ctr, Chicago, IL 60611 USA
[22] Med Univ Vienna, Vienna, Austria
[23] Med Univ Graz, Graz, Austria
[24] Univ Sao Paulo, Sch Med, Sao Paulo, Brazil
[25] Okayama Univ, Okayama, Japan
[26] Univ Tokyo, Tokyo, Japan
[27] Univ Zurich, Zurich, Switzerland
[28] Mayo Clin, Coll Med, Rochester, MN USA
[29] Emory Univ, Sch Med, Atlanta, GA USA
[30] Yale Univ, Sch Med, New Haven, CT USA
[31] Univ Helsinki, Skin & Allergy Hosp, Helsinki, Finland
[32] Univ Helsinki, Cent Hosp, Helsinki, Finland
[33] Mem Sloan Kettering Canc Ctr, New York, NY 10021 USA
[34] Johns Hopkins Med Inst, Baltimore, MD 21205 USA