[1] Department of Hematology,
[2] University of Crete School of Medicine,undefined
[3] University Hospital of Heraklion,undefined
[4] P. O. Box 1352,undefined
[5] Heraklion,undefined
[6] Crete,undefined
[7] Greece,undefined
[8] e-mail: geli@danae.med.uch.gr,undefined
[9] Fax: 0030-81-318 028,undefined