Chronic cerebrospinal venous insufficiency: Case-control neurosonography results. Barreto AD, Brod SA, Bui T-T, Jemelka JR, Kramer LA, Ton K, Cohen AM, Lindsey JW, Nelson F, Narayana PA, et al. Ann Neurol. 2012 Dec 13. PMID: 23418024. Abstract CommentRecommendBookmarkWatch