Predicting Aggressive Multiple Sclerosis With Intrathecal IgM Synthesis Among Patients With a Clinically Isolated Syndrome.

Monreal E, Sainz de la Maza S, Costa-Frossard L, Walo-Delgado P, Zamora J, Fernández-Velasco JI, Villarrubia N, Espiño M, Lourido D, Lapuente P, Toboso I, Álvarez-Cermeño JC, Masjuan J, Villar LM.