Corrigendum: Impact of Serum Uric Acid Lowering and Contemporary Uric Acid-Lowering Therapies on Cardiovascular Outcomes: A Systematic Review and Meta-Analysis - Ying, Hangying; Yuan, Hongdi; Tang, Xiaomei; Guo, Wenpu; Jiang, Ruhong; Jiang, Chenyang (Frontiers in Cardiovascular Medicine, 2021)