[1] Univ Toronto, Hosp Sick Children, Dept Pediat, Pediat Thrombosis & Hemostasis Program, Toronto, ON M5S 1A1, Canada
[2] UNC Hemophilia & Thrombosis Ctr Chapel Hill, Dept Med, Hill, NC USA
[3] UNC Hemophilia & Thrombosis Ctr Chapel Hill, Dept Pathol, Hill, NC USA
[4] Lund Univ, Dept Paediat, Skanes Univ Sjukhus, Malmo, Sweden
[5] Lund Univ, Malmo Ctr Thrombosis & Haemostasis, Skanes Univ Sjukhus, Malmo, Sweden
[6] Univ Colorado, Sch Med, Hemophilia & Thrombosis Ctr, Aurora, CO USA
[7] UMC Utrecht, Julius Ctr Hlth Sci & Primary Care, Utrecht, Netherlands
[8] Christian Med Coll & Hosp, Dept Hematol, Vellore, Tamil Nadu, India