Circadian rhythm sleep disorders in patients with multiple sclerosis and its association with fatigue: A case-control study. Najafi M R, Toghianifar N, Etemadifar M, Haghighi S, Maghzi A H, Akbari M J Res Med Sci. 2013 Mar; 18(Suppl 1):S71-3. PMID: 23961292. Abstract CommentRecommendBookmarkWatch