[1] UNIV LIEGE, B-4000 LIEGE, BELGIUM
[2] UNIV OKLAHOMA, OKLAHOMA CITY, OK 73190 USA
[3] COLUMBIA UNIV, NEW YORK, NY 10032 USA
[4] CLIN RES CTR, HARROW HA1 3UJ, MIDDX, ENGLAND
[5] TEIKYO UNIV, SAGAMIKO, KANAGAWA 19901, JAPAN
[6] NATL INST MED RES, LONDON NW7 1AA, ENGLAND
[7] SCRIPPS RES INST, LA JOLLA, CA 92037 USA
[8] UNIV TEXAS, MD ANDERSON CANC CTR, HOUSTON, TX 77030 USA
[9] HARVARD UNIV, SCH MED, BOSTON, MA 02115 USA
[10] UNIV ORLEANS, CNRS, F-4507 ORLEANS 02, FRANCE
[11] MASSACHUSETTS GEN HOSP, BOSTON, MA 02129 USA
[12] INSERM, U257, F-75230 PARIS, FRANCE
[13] MICHIGAN CANC FDN, DETROIT, MI 48201 USA
[14] UNIV TORONTO, TORONTO M5S 1A8, ON, CANADA
[15] MICHIGAN STATE UNIV, E LANSING, MI 48824 USA