Letter by Ren et al Regarding Article, "Small Extracellular Microvesicles Mediated Pathological Communications Between Dysfunctional Adipocytes and Cardiomyocytes as a Novel Mechanism Exacerbating Ischemia/Reperfusion Injury in Diabetic Mice". Issue 7 (18th August 2020) - Ren, Chuanli; Chen, Hui; Xie, Yuquan