Correction: Hypoxia Preconditioned Mesenchymal Stem Cells Prevent Cardiac Fibroblast Activation and Collagen Production via Leptin

• Panpan Chen,
• Rongrong Wu,
• Wei Zhu,
• Zhi Jiang,
• Yinchuan Xu,
• Han Chen,
• Zhaocai Zhang,
• Huiqiang Chen,
• Ling Zhang,
• Hong Yu,
• Jian'an Wang,
• Xinyang Hu