Sickle Cell Disease Treatment Market Size, Share & COVID-19 Impact Analysis, By Treatment Modality [Bone Marrow Transplant, Blood Transfusion, Pharmacotherapy {Hydroxyurea, Branded Products (Endari, Adakveo, Oxbryta, Zynteglo, PYRUKYND (Mitapivat), CTX001, Inclacumab, MGTA-145, Vamifeport (VIT-2763), ALXN1820, and FT-4202)}], By End-user (Hospitals, Specialty Clinics, and Others), and Forecast, 2022-2029