Risk factors for death in 632 patients with sickle cell disease in the United States and United Kingdom. oleh Mark T Gladwin, Robyn J Barst, J Simon R Gibbs, Mariana Hildesheim, Vandana Sachdev, Mehdi Nouraie, Kathryn L Hassell, Jane A Little, Dean E Schraufnagel, Lakshmanan Krishnamurti, Enrico Novelli, Reda E Girgis, Claudia R Morris, Erika Berman Rosenzweig, David B Badesch, Sophie Lanzkron, Oswaldo L Castro, James G Taylor, Jonathan C Goldsmith, Gregory J Kato, Victor R Gordeuk, Roberto F Machado, walk-PHaSST Investigators and Patients