The article appeared in Genes & Genetic Systems Vol. 94, No. 1 (p. 23-34) was listed under the incorrect category. We apologize for this error. The correction is as follows: Incorrect: Mini review Identification of atrial fibrillation-associated microRNAs in left and right atria of rheumatic mitral valve disease patients Yang Yan, Rui Shi, Xiaojiang Yu, Chaofeng Sun, Weijin Zang and Hongyan Tian Correct: Full paper Identification of atrial fibrillation-associated microRNAs in left and right atria of rheumatic mitral valve disease patients Yang Yan, Rui Shi, Xiaojiang Yu, Chaofeng Sun, Weijin Zang and Hongyan Tian.