Challenges in monitoring the quality of care in multiple sclerosis-authors' reply - Isabel Voigt; Stefanie Fischer; Undine Proschmann; Urszula Konofalska; Peggy Richter; Hannes Schlieter; Thomas Berger; Sven G. Meuth; Hans-Peter Hartung; Katja Akgün; Tjalf Ziemssen (Elsevier, 2024)