[1] HOSP SANTA MARIA,SERV PNEUMOL,LISBON,PORTUGAL
[2] HOSP DR PESET,UNIDAD ONCOL MED,VALENCIA,SPAIN
[3] MEM SLOAN KETTERING CANC CTR,NEW YORK,NY
[4] GUYS HOSP,LONDON,ENGLAND
[5] INST JULES BORDET,BRUSSELS,BELGIUM
[6] UNIV NIJMEGEN ST RADBOUD HOSP,NIJMEGEN,NETHERLANDS
[7] HOSP BARCELONA GERMANS TRIAS & PUJOL,BARCELONA,SPAIN
[8] LATTER DAY ST HOSP,CTR RADIAT,SALT LAKE CITY,UT
[9] MAYO CLIN & MAYO FDN,ROCHESTER,MN
[10] RIGSHOSP,DEPT ONCOL,DK-2100 COPENHAGEN,DENMARK
[11] UNIV ROTTERDAM HOSP,ROTTERDAM,NETHERLANDS
[12] UNIV ZURICH,ZURICH,SWITZERLAND
[13] UNIV COLORADO,DENVER,CO