The CTLA4 region as a general autoimmunity factor: An extended pedigree provides evidence for synergy with the HLA locus in the etiology of type 1 diabetes mellitus, Hashimoto's thyroiditis and Graves' diseaseElísabet Einarsdóttir, Dan Holmberg, Anna Löfgren‐Burström et al.|European Journal of Human Genetics|2003Cited by 64