From the North Texas Institute of Neurology and Headache (A.F.O.), Plano; Multiple Sclerosis Institute of Texas (A.M.H.), Houston; Joi Life Wellness Multiple Sclerosis Neurology Center (M.J.W.), Smyrna, GA; Providence Brain and Spine Institute (J.D.B., C.C., T.L.S., E.B., S.L.C.), Portland, OR; and Alphabet Health (G.J.), New York.