TY - JOUR TI - Hypogammaglobulinemia in rheumatoid arthritis patients treated with rituximab: should we switch biologics? Comment on the article by Fraenkel et al AU - Evangelatos, G. AU - Moschopoulou, M. AU - Iliopoulos, A. AU - Fragoulis, G.E. JO - Arthritis and Rheumatology PY - 2022 VL - 74 TODO - 1 SP - 174-175 PB - John Wiley and Sons Inc SN - 2326-5191, 2326-5205 TODO - 10.1002/art.41938 TODO - antibiotic agent; C reactive protein; disease modifying antirheumatic drug; immunoglobulin A; immunoglobulin G; immunoglobulin M; rituximab; antirheumatic agent; biological product; rituximab, antibiotic therapy; DAS28; disease activity; drug substitution; drug withdrawal; follow up; human; immunoglobulin blood level; immunoglobulin deficiency; immunotherapy; Letter; rheumatoid arthritis; risk factor; treatment switching; agammaglobulinemia, Agammaglobulinemia; Antirheumatic Agents; Arthritis, Rheumatoid; Biological Products; Humans; Rituximab TODO - null ER -