Familial atrial fibrillation mutation M1875T-SCN5A increases early sodium current and dampens the effect of flecainide by O'Reilly, M, Sommerfeld, LC, O'Shea, C, Broadway-Stringer, S, Andaleeb, S, Reyat, JS, Kabir, SN, Stastny, D, Malinova, A, Delbue, D, Fortmueller, L, Gehmlich, K, Pavlovic, D, Skryabin, BV, Holmes, AP, Kirchhof, P, Fabritz, L