North America Sickle Cell Disease Market, By Disease Type (Sickle Cell Anemia, Sickle Beta Thalassemia, Sickle Hemoglobin C Disease), By Drug Type (Hydroxyurea, L-glutamine, Crizanlizumab, Pain-relievers, Voxelotor, Others), By Distribution Channel (Hospital Pharmacies, Retail Pharmacies, Online Pharmacies)