[1] Shaare Zedek Med Cent, Jerusalem, Israel
[2] Hebrew Univ Jerusalem, Hadassah Med Sch, IL-91010 Jerusalem, Israel
[3] Sanatorio Espanol, Asuncion, Paraguay
[4] All India Inst Med Sci, New Delhi, India
[5] Minist Publ Hlth Russia, Hematol Res Ctr, Moscow, Russia
[6] CIBERER, Zaragoza, Spain
[7] Hosp Univ Miguel Servet, Zaragoza, Spain
[8] Your Hlth SA, Buenos Aires, DF, Argentina
[9] KEM Hosp Res Ctr, Pune, Maharashtra, India
[10] La Rabta Hosp, Tunis, Tunisia
[11] Duke Univ, Med Ctr, Durham, NC USA
[12] UCL, London, England
[13] Shire HGT, Lexington, MA USA
[14] Wright State Univ, Dayton, OH 45435 USA