Supplemental material, sj-docx-1-msj-10.1177_13524585231161253 for Humoral immune responses remain quantitatively impaired but improve qualitatively in anti-CD20-treated patients with multiple sclerosis after three or four COVID-19 vaccinations by Carolin Otto, Tatjana Schwarz, Lara M Jeworowski, Marie L Schmidt, Felix Walper, Florence Pache, Patrick Schindler, Moritz Niederschweiberer, Andi Krumbholz, Ruben Rose, Christian Drosten, Klemens Ruprecht and Victor M Corman in Multiple Sclerosis Journal