[1] RADIUM HOSP,OSLO,NORWAY
[2] NIH,BETHESDA,MD 20892
[3] CLEVELAND CLIN,CLEVELAND,OH 44106
[4] UNIV UTRECHT,UTRECHT,NETHERLANDS
[5] UNIV CAMBRIDGE,CAMBRIDGE,ENGLAND
[6] UNIV UTAH,SALT LAKE CITY,UT
[7] ONCORMED INC,GAITHERSBURG,MD
[8] UNIV PENN,PHILADELPHIA,PA 19104
[9] NIEHS,RES TRIANGLE PK,NC 27709