[1] Northwestern Univ, Dept Med Social Sci, Feinberg Sch Med, Chicago, IL USA
[2] Sahlgrens Univ Hosp, Gothenburg, Sweden
[3] Osaka Univ, Dept Hematol & Oncol, Grad Sch Med, Osaka, Japan
[4] Alexion, AstraZeneca Rare Dis, Boston, MA USA
[5] Alexion, AstraZeneca Rare Dis, Zurich, Switzerland
[6] Univ Ulm, Inst Transfus Med, Ulm, Germany
[7] German Red Cross Blood Transfus Serv Baden Wurtte, Inst Clin Transfus Med, Ulm, Germany
[8] Univ Ulm, Univ Hosp Ulm, Ulm, Germany