[1] HOSP ERASME, BRUSSELS, BELGIUM
[2] PETER MACCALLUM CANC INST, MELBOURNE, FL USA
[3] UNIV LIEGE, CTR HOSP, LIEGE, BELGIUM
[4] MAYO CLIN & MAYO FDN, ROCHESTER, MN USA
[5] HOP TENON, PARIS, FRANCE
[6] MASSACHUSETTS GEN HOSP, BOSTON, MA USA
[7] WASHINGTON UNIV, MED CTR, ST LOUIS, MO USA
[8] SERV CHIRURG THORAC, PARIS, FRANCE
[9] UNIV MICHIGAN, ANN ARBOR, MI USA
[10] NATL NAVAL MED CTR, BETHESDA, MD USA
[11] MED ACAD GDANSK, GDANSK, POLAND
[12] ACAD ZIEKENHUIS ROTTERDAM, ROTTERDAM, NETHERLANDS
[13] INST GUSTAVE ROUSSY, VILLEJUIF, FRANCE
[14] POLYCLIN COURLANCY, REIMS, FRANCE
[15] FREE UNIV BRUSSELS, ACAD ZIEKENHUIS, JETTE, BELGIUM
[16] UNIV LIMBURG, MAASTRICHT, NETHERLANDS