Shuang, H.
Feng, J.
Caineng, C.
Qifeng, J.
Tin, J.
Yuanyuan, C. http://orcid.org/0000-0002-9655-7828
Xiaozhong, C.
Article History
Received: 10 May 2018
Accepted: 19 June 2018
First Online: 25 June 2018
Compliance with ethical standards
:
: The authors declare that they have no competing interests.
: The study was carried out according to the precepts of the Helsinki Declaration. The study protocol was reviewed by the Medical Ethics Committee of the Zhejiang Cancer Hospital and they concluded that approval by a Medical Ethics Committee was not obligatory for this study.
: All participants provided written informed consent.