BARD1 and atrial fibrillation: circRNA-miRNA-mRNA network DEcircRNA between AF group and SR group (circ 255-ITGA7, circ 418-KCNN2, circ 13913-MIB1, circ 44670-BARD1, circ 44782-LAMA2, circ 81906-RYR2, circ 35880-ANO5, circ 22249-TNNI3K, circ 3136-TNNI3K,  circ 56186-TNNI3K)