[1] Yale Univ, New Haven, CT 06520 USA
[2] Natl Canc Ctr, Tokyo, Japan
[3] Queens Univ, Kingston, ON K7L 3N6, Canada
[4] Univ Turin, Turin, Italy
[5] Georgetown Univ, Washington, DC USA
[6] Mem Sloan Kettering Canc Ctr, New York, NY 10021 USA
[7] Sungkyunkwan Univ, Sch Med, Samsung Med Ctr, Seoul, South Korea
[8] Univ Tokushima, Tokushima 770, Japan
[9] Univ Pisa, Pisa, Italy
[10] Regina Elena Inst Canc Res, Rome, Italy
[11] Univ Texas MD Anderson Canc Ctr, Houston, TX 77030 USA
[12] Royal Brompton Hosp, London SW3 6LY, England
[13] Osaka Univ, Osaka, Japan
[14] Univ Antwerp Hosp, Antwerp, Belgium
[15] Univ Maryland, Baltimore, MD 21201 USA