[1] Sanger Ctr, Hinxton CB10 1SA, Cambs, England
[2] LMU, Abt Med Genet, D-80336 Munich, Germany
[3] Max Planck Inst Biochem, D-82152 Martinsried, Germany
[4] Addenbrookes Hosp, Dept Resp Med, Cambridge CB2 2QQ, England
[5] Univ Wurzburg, Kinderklin, D-97080 Wurzburg, Germany
[6] Osped San Paolo, Ist Sci Biomed, Cattedra Gen Umana, Milan, Italy
[7] Univ Pavia, Fac Med 2, Dip Patol Umana & Ereditaria, I-27100 Pavia, Italy
[8] Int Agcy Res Canc, Genet Canc Susceptibil Unit, F-69372 Lyon, France
[9] TIGEM, I-20132 Milan, Italy
[10] Inst Gaslini, Mol Genet Lab, Genoa, Italy
[11] Univ Nebraska, Dept Microbiol & Pathol, Omaha, NE 68182 USA
[12] Royal Free Hosp, Sch Med, Dept Clin Immunol, London, England
[13] Univ Oxford, John Radcliffe Hosp, Inst Mol Med, Oxford OX3 9DS, England
[14] Int Agcy Res Canc, Programme Viral & Hereditary Factors Carcinogenes, F-69372 Lyon, France
[15] Hop Necker Enfants Malad, INSERM, U429, F-75015 Paris, France
[16] Great Ormond St Hosp Sick Children, London WC1N 3JH, England
[17] LMU, Haunersche Immundefektambulanz, D-80336 Munich, Germany