Smoking, Comorbidities, and Low Sun Exposure Are Associated with Clinical and Radiological Outcomes in Patients with Multiple Sclerosis—A Four-Year Observational Cohort Study. - Galus, Weronika; Winder, Mateusz; Owczarek, Aleksander Jerzy; Zawiślak-Fornagiel, Katarzyna; Kiełbowicz-Hołysz, Magdalena; Siuda, Joanna (Journal of Clinical Medicine, 2026)