[1] Sanquin Consulting Serv, NL-1066 CX Amsterdam, Netherlands
[2] Acad Med Ctr, Dept Gastroenterol & Hepatol, Amsterdam, Netherlands
[3] Sanquin Res & Sanquin Diagnost Serv, NL-1066 CX Amsterdam, Netherlands
[4] Blutspendezentral, A-1040 Vienna, Austria
[5] Finnish Red Cross & Blood Transfus Serv, SF-00310 Helsinki, Finland
[6] Direct Med & Sci, Etab Francais Sang, F-93218 St Denis, France
[7] Japanese Red Cross Blood Serv, Cent Blood Inst, Dept Nucle Acid Amplificat Testing, Oota Ku, Tokyo 1440055, Japan
[8] Asker & Baerum Hosp, Lab Ctr, NO-1309 Rud, Norway
[9] Inst Haematol & Transfus Med, PL-02776 Warsaw, Poland
[10] Inst Portugues Sangue, P-1749005 Lisbon, Portugal
[11] Blood Transfus Ctr Slovenia, Dept Diagnost Serv, SI-1000 Ljubljana, Slovenia
[12] Ctr Transfus Alicante, Alicante 03550, Spain
[13] Banc Sang & Teixits, Barcelona 08035, Spain
[14] Ctr Transfus La Cruz Roja, Madrid 28040, Spain
[15] Blood Transfus Serv SRC Berne, CH-3008 Bern, Switzerland
[16] Univ Cambridge, Dept Hematol, E Anglia Blood Ctr, Div Transfus Med, Cambridge CB2 2PT, England
[17] Komfo Anokye Teaching Hosp, Transfus Med Unit, Kumasi, Ghana
[18] Natl Blood serv, London NW9 5BG, England
[19] US FDA, HFM 100, Rockville, MD 20852 USA