1 Regional Centre for Transfusion Medicine, Bialystok, Poland.
2 Department of Transfusion Medicine, Sanquin Blood Supply Foundation, Amsterdam, the Netherlands; Deptartment of Haematology, Erasmus Medical Centre, Rotterdam, the Netherlands.
3 Department of Transfusion Medicine, Sanquin Blood Supply Foundation, Amsterdam, the Netherlands.
4 ISBT Central Office, Amsterdam, the Netherlands.
5 Department of Hematology, Sultan Qaboos University Hospital, Sultan Qaboos University, Muscat, Oman. Electronic address: arwa@squ.edu.om.