Association Between Titin Loss-of-Function Variants and Early-Onset Atrial Fibrillation. - Choi SH; Weng LC; Roselli C; Lin H; Haggerty CM; Shoemaker MB; Barnard J; Arking DE; Chasman DI; Albert CM; Chaffin M; Tucker NR; et al. (JAMA, 2018)