You, Wendong
Zhu, Yuanrun
Wang, Yadong
Liu, Wenchao
Wang, Hao
Wen, Liang
Yang, Xiaofeng
Article History
Received: 20 December 2017
Accepted: 5 March 2018
First Online: 12 March 2018
Compliance with ethical standards
: The study was approved by the ethics committee of the First Affiliated Hospital, College of Medicine, Zhejiang University, and was performed in accordance with the ethical standards laid down in the 1964 Declaration of Helsinki and its later amendments. Informed consent was obtained from all individual participants included in the study.
: The authors declare that they have no conflict of interest.