[1] Sunnybrook Hlth Sci Ctr, Toronto, ON M4N 3M5, Canada
[2] Univ Halle Wittenberg, D-06108 Halle, Saale, Germany
[3] Univ Paris 05, Inst Curie, Paris, France
[4] Hosp Univ 12 Octubre, Madrid, Spain
[5] Prato Hosp, Ist Toscano Tumori, Prato, Italy
[6] Sun Yat Sen Univ Med Sci, Guangzhou, Guangdong, Peoples R China
[7] St Petersburg City Oncol Hosp, St Petersburg, Russia
[8] Ctr Goiano Oncol, Goiania, Go, Brazil
[9] Hadassah Hebrew Univ Med Ctr, Jerusalem, Israel
[10] Mater Private Hosp, Sydney, NSW, Australia
[11] Mazowiecki Szpital Onkol, Wieliszew, Poland
[12] Slingeland Ziekenhuis Inwendige Geneeskunde, Doetinchem, Netherlands
[13] Tuen Mun Hosp, Hong Kong, Hong Kong, Peoples R China
[14] F Hoffmann La Roche Ltd, Basel, Switzerland
[15] Royal Marsden Hosp, London SW3 6JJ, England
[16] Inst Canc Res, London SW3 6JB, England