Affiliation: | (1) Department of Immunohaematology, University Hospital, Leiden, The Netherlands;(2) Department of Cell Biology and Genetics, Faculty of Medicine, Erasmus University, Room Ee702, Postbox 1738, 3000 DR Rotterdam, The Netherlands;(3) Genetics Division, Medical Research Council Radiobiology Unit, Chilton, Didcot, Oxon, UK |