Evidence gaps in the management of sickle cell disease: A summary of needed research

William J. Savage, George R. Buchanan, Barbara P. Yawn, Araba N. Afenyi-Annan, Samir K. Ballas, Jonathan C. Goldsmith, Kathryn L. Hassell, Andra H. James, Joylene John-Sowah, Lanetta Jordan, Richard Lottenberg, M. Hassan Murad, Eduardo Ortiz, Paula J. Tanabe, Russell E. Ware, Sophie M. Lanzkron