Correction: Exosomes activate hippocampal microglia in atrial fibrillation through long-distance heart–brain communication - Xuewen Wang; Yuanjia Ke; Zhen Cao; Yuntao Fu; Yanni Cheng; Dishiwen Liu; Huiyu Chen; Kexin Guo; Yajia Li; Mei Yang; Qingyan Zhao (BMC Cardiovascular Disorders)