Article History
Received: 15 June 2018
Accepted: 2 September 2018
First Online: 14 September 2018
Compliance with ethical standards
:
: The authors declare that they have no conflicts of interest.
: This study was reviewed and approved by the ethics committee of the institutional review board (IRB, HU2014-04), the First Hospital Affiliated to Huzhou University School of Medicine. All procedures performed in this study involving human participants were in accordance with the ethical standards of the institutional and/or national research committee.
: Informed consent forms were obtained from all individual participants who were included in the study.