Xue, Xin
Jiang, Lisheng
Duenninger, Erich
Muenzel, Manuela
Guan, Shaofeng
Fazakas, Adam
Cheng, Fanzhou
Illnitzky, Juergen
Keil, Thorsten
Yu, Jiangtao
Article History
Received: 23 October 2017
Accepted: 16 March 2018
First Online: 22 March 2018
Compliance with ethical standards
:
: This study complies with the Declaration of Helsinki and our Institutional Ethics Committee approved the study protocol.
: The authors declare no conflict of interest.