P1488: ASSOCIATION BETWEEN HEMOGLOBIN LEVELS AND END-ORGAN DAMAGE IN SICKLE CELL DISEASE: A RETROSPECTIVE LINKED PRIMARY AND SECONDARY CARE DATABASE ANALYSIS IN ENGLAND. (23rd June 2022) - Telfer, P.; Carvalho, S.; Ruzangi, J.; Arici, M.; Binns, M.; Beaubrun, A.; Rice, C.; Were, J. J.