[1] Henry Ford Hosp, Dept Med, Detroit, MI 48202 USA
[2] Mary M Gooley Hemophilia Ctr, Dept Med, New York, NY USA
[3] Univ New Mexico, Dept Med, Albuquerque, NM 87131 USA
[4] Univ Rochester, Med Ctr, Div Hematol Oncol, Rochester, NY 14642 USA
[5] McMaster Univ, Dept Med, Hamilton, ON, Canada
[6] McMaster Childrens Hosp, Div Pediat Hematol Oncol, Hamilton, ON, Canada
[7] Duke Univ, Dept Obstet & Gynecol & Med, Durham, NC USA
[8] Univ N Carolina, Sch Med, Dept Med, Chapel Hill, NC USA
[9] Duke Univ, Med Ctr, Dept Pathol & Med, Durham, NC USA
[10] Massachusetts Gen Hosp, Dept Pathol, Boston, MA 02114 USA
[11] NYU, Sch Med, Dept Med, New York, NY USA