Funding for this research was provided by:
Six Talent Peaks Project in Jiangsu Province (30000)
Text and Data Mining valid from 2019-01-12
Received: 30 August 2018
Accepted: 4 December 2018
First Online: 12 January 2019
Compliance with ethical standards
: This study was conducted in compliance with the institutional policy regarding the protection of patients’ private information and approved by the Research Ethics Committee of the First Affiliated Hospital of Soochow University. All the methods were carried out in accordance with the approval guidelines of The First Affiliated Hospital of Soochow University.
: The authors declare that they have no conflict of interest.