Transcriptional control of CHRNA1 gene in thymus by a promoter SNP associated with onset of autoimmune myasthenia gravis. by Giraud, M, Toubert, R, Kyewski, B, Vandiedonck, C, Levi-Strauss, M, Pagani, F, Baralle, F, Eymard, B, Tranchant, C, Gajdos, P, Vincent, A, Willcox, N, Beeson, D, Garchon, H