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1 Nielsen NM  Frisch M  Rostgaard K  . Autoimmune diseases in patients with multiple sclerosis and their first-degree relatives: a nationwide cohort study in Denmark. Mult Scler 2008; 14: 823–829.

2 Ramagopalan S;  Dyment D;  Ebers G;  . Letter to the editor: Autoimmune disease in patients with multiple sclerosis and their first-degree relatives: a nationwide cohort study in Denmark. Mult Scler 2008; 14: 1288–1289.

3 Nielsen NM  Westergaard T  Frisch M  . Type 1 diabetes and multiple sclerosis: A Danish population-based cohort study. Arch Neurol 2006; 63: 1001–1004.

4 Gupta G  Gelfand JM  Lewis JD  . Increased risk for demyelinating diseases in patients with inflammatory bowel disease. Gastroenterology 2005; 129: 819–826.

5 Bernstein CN  Wajda A  Blanchard JF  . The clustering of other chronic inflammatory diseases in inflammatory bowel disease: a population-based study. Gastroenterology 2005; 129: 827–836.

6 Baker HW  Balla JI  Burger HG  Ebeling P  Mackay IR  . Multiple sclerosis and autoimmune diseases. Aust N Z J Med 1972; 2: 256–260.

7 Simjee S  Konqui A  Razzaque AA  . Multiple sclerosis and bullous pemphigoid. Dermatologica 1985; 170: 86–89.

8 Stinco G  Mattighello P  Zanchi M  Patrone P  . Multiple sclerosis and bullous pemphigoid: a casual association or a pathogenetic correlation. Eur J Dermatol 2002; 12: 186–188.

9 Kirtschig G  Walkden VM  Venning VA  Wojnarowska F  . Bullous pemphigoid and multiple sclerosis: a report of three cases and review of the literature. Clin Exp Dermatol 1995; 20: 449–453.

10 Cordel N  Chosidow O  Hellot MF  . Neurological disorders in patients with bullous pemphigoid. Dermatology 2007; 215: 187–191.

11 Ramagopalan SV  Dyment DA  Valdar W  . Autoimmune disease in families with multiple sclerosis: a population-based study. Lancet Neurol 2007; 6: 604–610.