[1] Inst Canc Res, Sect Canc Genet, Sutton SM2 5NG, Surrey, England
[2] Univ Wurzburg, Dept Human Genet, D-97074 Wurzburg, Germany
[3] Univ Dusseldorf, Dept Pediat Oncol Hematol & Immunol, D-40225 Dusseldorf, Germany
[4] Indiana Univ, Sch Med, Herman B Wells Ctr Pediat Res, Indianapolis, IN 46202 USA
[5] Rockefeller Univ, Lab Human Genet & Hematol, New York, NY 10021 USA
[6] Cornell Univ, Weill Med Coll, Dept Pathol & Lab Med, New York, NY 10021 USA
[7] Hacettepe Univ, Div Pediat Hematol, Ihsan Dooramacy Children Hosp, TR-06100 Ankara, Turkey
[8] Charite Univ Med Berlin, Dept Human Genet, D-13353 Berlin, Germany
[9] Univ Malaya, Med Ctr, Paediat Haematol Oncol Unit, Kuala Lumpur, Malaysia
[10] Sir Mortimer B Davis Jewish Hosp, Canc Prevent Ctr, Montreal, PQ H3T 1E2, Canada
[11] McGill Univ, Program Canc Genet, Dept Oncol, Montreal, PQ H3A 1B1, Canada
[12] McGill Univ, Dept Human Genet, Montreal, PQ H3A 1B1, Canada
[13] Kings Coll London, Sch Med, Guys Hosp, Dept Med & Mol Genet, London SE1 9RT, England