Article History
Received: 21 March 2019
Accepted: 18 December 2019
First Online: 30 December 2019
Ethics approval and consent to participate
: The study was approved by the Ethics Committee of Zhangjiagang Hospital Affiliated to Soochow University, the First People’s Hospital of Zhangjiagang (Zhangjiagang, China). Written informed consent was obtained from each participant.
: Not applicable.
: The authors declare that they have no competing interests.