1. Department of Graduate, First Clinical Colledge, Gannan Medical University, Ganzhou, Jiangxi, China.
2. Department of Urology, the First Affiliated Hospital of Gannan Medical University, Ganzhou, Jiangxi, China.
3. Institute of Urology, the First Affiliated Hospital of Gannan Medical University, Ganzhou, Jiangxi, China.
4. Jiangxi Engineering Technology Research Center of Calculi Prevention, Ganzhou, Jiangxi, China.