Article History
Received: 8 January 2018
Accepted: 21 February 2018
First Online: 13 March 2018
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: This study was approved by the institutional review board of the Zhejiang Cancer Hospital.
: The study was conducted in accordance with the principles of Goof Clinical Practices and Declaration of Helsinki (1964 and its revisions). Patients who provided written informed consent, were enrolled in the study.
: No additional data available.