[1] Emory Univ, Childrens Healthcare Atlanta, Aflac Canc & Blood Disorders Ctr, Atlanta, GA 30322 USA
[2] Chaim Sheba Med Ctr, Israeli Natl Hemophilia Ctr, IL-52621 Tel Hashomer, Israel
[3] Chaim Sheba Med Ctr, Thrombosis Unit, IL-52621 Tel Hashomer, Israel