1. Department of Nephrology, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400042, P.R. China
2. Department of Cardiology, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400042, P.R. China
3. Department of Ultrasonography, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400042, P.R. China