[1] SAN DIEGO STATE UNIV,DEPT PSYCHOL,SAN DIEGO,CA 92182
[2] HOSP UNIV PENN,SCH MED,DEPT RADIAT ONCOL,PHILADELPHIA,PA 19104
[3] ROSWELL PK CANC INST,DEPT PEDIAT,BUFFALO,NY
[4] GOTHENBURG UNIV,DEPT PEDIAT,S-41124 GOTHENBURG,SWEDEN
[5] AGHIA SOPHIA CHILDRENS HOSP,DEPT CLIN HEMATOL ONCOL,ATHENS,GREECE
[6] ST ANNA CHILDRENS HOSP,DEPT PEDIAT,VIENNA,AUSTRIA
[7] ROYAL MANCHESTER CHILDRENS HOSP,DEPT PEDIAT ONCOL,MANCHESTER M27 1HA,LANCS,ENGLAND
[8] ST ELISABETHS HOSP,DEPT PEDIAT,UTRECHT,NETHERLANDS
[9] UNIV MINNESOTA,DIV PEDIAT HEMATOL ONCOL & BONE MARROW TRANSPLAND,MINNEAPOLIS,MN 55455
[10] SEMMELWEIS UNIV MED,DEPT PEDIAT 2,H-1085 BUDAPEST 8,HUNGARY
[11] CHILDRENS HOSP,DEPT ONCOL,BIRMINGHAM B16 8ET,W MIDLANDS,ENGLAND
[12] PRESBYTERIAN PACIFIC MED CTR,CHILDRENS CANC RES INST,SAN FRANCISCO,CA