Lu, Jinqiu
Liu, Liansheng
Zheng, Mingjie
Li, Xiaoling
Wu, Ailing
Wu, Qingzhe
Liao, Cheng
Zou, Jian
Song, Hai
Article History
Received: 20 September 2017
Revised: 7 March 2018
Accepted: 14 March 2018
First Online: 17 April 2018
Compliance with ethical standards
:
: CL is a full-time employee of Johnson & Johnson (China) Investment Ltd. The remaining authors declare that they have no conflict of interest.