Yang, S.
Shen, Y.-M.
Wang, M.-G.
Zou, Z.-Y.
Jin, C.-H.
Chen, J.
Article History
Received: 25 May 2018
Accepted: 14 September 2018
First Online: 27 September 2018
Compliance with ethical standards
:
: The authors declare that there is no conflict of interest involved.
: This study was approved by the Ethical Committee of the Beijing Chao-Yang hospital.
: All procedures were approved by the Institutional Review Board of Beijing Chao-Yang Hospital.
: Written informed consents were obtained from all the participants before the trial.