Multiple Sclerosis Scheller NM, Svanström H, Pasternak B, Arnheim-Dahlström L, Sundström K, Fink K, Hviid A Abstract IMPORTANCE: Case reports have suggested a link between human papillomavirus (HPV) vaccination and development of multiple sclerosis and other demyelinating diseases. OBJECTIVE: To investigate if quadrivalent HPV (qHPV) vaccination is associated with an increased risk of multiple sclerosis […]