P1697: CHARACTERISTICS, TREATMENT PATTERNS AND HEALTHCARE UTILIZATION OF PATIENTS WITH WARM AUTOIMMUNE HEMOLYTIC ANEMIA INITIATING FIRST LINE THERAPY OF ORAL CORTICOSTEROIDS WITH OR WITHOUT RITUXIMAB - Irina Murakhovskaya; Concetta Crivera; Ann Leon; Evo Alemao; Vamshi Ruthwik Anupindi; Mitch Dekoven; Victoria Divino; Iris Lin; Cathye Shu; Tarek Ebrahim (HemaSphere, 2023)