[1] Netherlands Red Cross, Blood Transfus Serv Sanquin, Cent Lab, NL-1066 CX Amsterdam, Netherlands
[2] Blood Bank N Holland Sanquin, NL-1066 CX Amsterdam, Netherlands
[3] Finnish Red Cross & Blood Transfus Serv, Lab Serv, FIN-00310 Helsinki, Finland
[4] Hosp Sirio Libanes Blood Bank, BR-01308050 Sao Paulo, Brazil
[5] Hungarian Natl Blood Transfus Serv, Budapest Reg Blood Transfus Ctr, Budapest, Hungary
[6] Tokyo Western Blood Ctr JRCS, Tachikawa, Tokyo 1900014, Japan
[7] Inst Haematol & Blood Transfus, Head Reference Lab Immunohaematol, Prague 12820 2, Czech Republic
[8] Univ Hamburg, Chirurg Klin, Abt Transfus Med Transplantat Immunol, D-20246 Hamburg, Germany
[9] Univ Vienna, Clin Blood Grp Serol & Transfus Med, A-1090 Vienna, Austria
[10] Univ Kliniken Innsbruck, Landeskrankenhaus, Zent Inst Bluttransfus, A-6020 Innsbruck, Austria
[11] Univ Kliniken Innsbruck, Landeskrankenhaus, Immunol Abt, A-6020 Innsbruck, Austria
[12] Hong Kong Red Cross Blood Transfus Serv, Kowloon, Hong Kong, Peoples R China
[13] Natl Blood Serv, Trent Ctr, Sheffield, S Yorkshire, England
[14] Bronovo Hosp, Dept Clin Chem & Haematol, NL-2597 AX The Hague, Netherlands
[15] Inst Hematol & Blood Transfus, Warsaw, Poland
[16] Univ Oslo, Natl Hosp, NO-0027 Oslo, Norway
[17] New Zealand Blood Serv, Auckland, New Zealand
[18] US FDA, Rockville, MD 20852 USA
[19] Univ Hosp, Dept Clin Immunol & Transfus Med, SE-75185 Uppsala, Sweden
[20] Osped Maggiore, I-20122 Milan, Italy