[1] Amer Red Cross, Rockville, MD 20855 USA
[2] Canadian Blood Serv, Donor & Transplantat Serv, Ottawa, ON K1G 4J5, Canada
[3] Univ Amsterdam, Acad Med Ctr, Dept Gastroenterol & Hepatol, NL-1105 AZ Amsterdam, Netherlands
[4] Univ Vienna, Univ Klin Blutgruppenserol & Transfusmed, Klin Abt Blutgruppenserol, A-1090 Vienna, Austria
[5] Australian Red Cross Blood Serv, Osborne Pk, WA 6017, Australia
[6] Hosp Sirio Libanes, BR-01308050 Sao Paulo, Brazil
[7] Thomayer Teaching Hosp, Blood Transfus Dept, Prague 14059, Czech Republic
[8] Shanghai Blood Ctr, Shanghai, Peoples R China
[9] Natl Blood Transfus Serv, Minist Hlth & Populat, Giza, Egypt
[10] N Estonia Med Ctr, CEO Blood Ctr, EE-10614 Tallinn, Estonia
[11] French Inst Publ Hlth Surveillance, F-94415 St Maurice, France
[12] Etab Francais Sang, F-93218 La Plaine St Denis, France
[13] Etab Francais Sang, F-67065 Strasbourg, France
[14] Etab Francais Sang, F-44011 Nantes, France
[15] Goethe Univ Frankfurt, Inst Transfus Med & Immunohematol, Clin Johann Wolfgang Goethe, Main German Red Cross Blood Transfus Serv Baden W, D-60528 Frankfurt, Germany
[16] Hong Kong Red Cross Blood Transfus Serv, Kowloon, Hong Kong, Peoples R China
[17] Indraprastha Apollo Hosp, Dept Transfus Med, Mol Biol & Immunol Lab, Sarita Vihar, New Delhi, India
[18] Italian Natl Blood Cent, I-00162 Rome, Italy
[19] Japanese Red Cross Soc, Cent Blood Inst, Blood Serv Headquarters, Tokyo 1058521, Japan
[20] Inst Nacl Pediat, Mexico City 04530, DF, Mexico
[21] Banco Cent Sangre Siglo XXI, Inst Mexicano Seguro Social, Mexico City 06725, DF, Mexico
[22] Ctr Nacl Transfus Sanguinea, Mexico City 07360, DF, Mexico
[23] New Zealand Blood Serv, Auckland, New Zealand
[24] Oslo Univ Hosp, Dept Immunol & Transfus Med, Oslo, Norway
[25] Inst Hematol & Transfus Med, PL-02776 Warsaw, Poland
[26] Pirogov Russian Natl Med Surg Ctr, Head Blood Transfus Dept, Moscow 105203, Russia
[27] Blood Transfus Ctr Slovenia, Ljubljana 1000, Slovenia
[28] S African Natl Blood Serv, ZA-1715 Weltevreden Pk, South Africa
[29] Ctr Transfus Cruz Roja Espanola Madrid, Madrid 328040, Spain
[30] Linkoping Univ Hosp, Swedish Soc Transfus Med, SE-58185 Linkoping, Sweden
[31] NHS Blood & Transplant, Leeds LS15 7TW, W Yorkshire, England