5554869 ASSOCIATION BETWEEN HEMOGLOBIN LEVELS AND END-ORGAN DAMAGE IN SICKLE CELL DISEASE: A RETROSPECTIVE LINKED PRIMARY AND SECONDARY CARE DATABASE ANALYSIS IN ENGLAND - P.T. Telfer; S.J.C. Carvalho; J.R. Ruzangi; M.A. Arici; M.B. Binns; A.B. Beaubrun; C.T.R. Rice; J.J.W. Were (HemaSphere, 2023)