[1] Levine Canc Inst & Atrium Hlth, Nonmalignant Hematol Sect, Charlotte, NC USA
[2] Univ South Carolina, Sch Med, Prisma Hlth Comprehens SCD Program, Greenville, SC USA
[3] Emory Univ, Sch Med, Childrens Healthcare Atlanta, Aflac Canc & Blood Disorders Ctr, Atlanta, GA USA
[4] Duke Univ, Dept Med, Durham, NC USA
[5] St Jude Childrens Res Hosp, Dept Global Pediat Med, 332 N Lauderdale St, Memphis, TN 38105 USA
[6] St Jude Childrens Res Hosp, Dept Hematol, 332 N Lauderdale St, Memphis, TN 38105 USA