[1] Netherlands Red Cross, Blood Transfus Serv, Cent Lab, NL-1006 AD Amsterdam, Netherlands
[2] TNO, PG, NL-2301 CE Leiden, Netherlands
[3] Univ Leiden Hosp, Dept Rheumatol, NL-2300 RC Leiden, Netherlands
[4] Leiden Univ, Med Ctr, Dept Immunohematol, NL-2300 RC Leiden, Netherlands
[5] Leiden Univ, Med Ctr, Bloodbank, NL-2300 RC Leiden, Netherlands