^a)Mild anemia=Hb 10.1–12, moderate anemia=Hb 8.1–10, severe anemia=Hb 6.1–8, very severe anemia=Hb<6.

Abbreviations: WAIHA, warm autoimmune hemolytic anemia; CAD, cold agglutinin disease; Hb, hemoglobin; LDH, lactate dehydrogenase.