Thauera humireducens, Denitratisoma oestradiolicum, Romboutsia timonensis, Flavilitoribacter nigricans, Allochromatium palmeri, Usitatibacter palustris, Acidibacter ferrireducens, Lacibacter nakdongensis, Tepidiforma flava, Methyloglobulus morosus, Woodsholea maritima were indicated by the acronyms of TH, DO, RT, FN, AP, UP, AF, LN, TF, MM, WM, respectively, and co-occurrence relationships between them included TH-DO, RT-AP, AP-FN, LN-AF, UP-AF, UP-LN, UP-FN, MM-WM, and MM-TF. This evidence concerns the gene FN1 and atrial fibrillation.