Guo, Lingmei http://orcid.org/0000-0003-0982-7816
Wang, Shihui http://orcid.org/0000-0002-7232-7358
He, Yuan http://orcid.org/0000-0002-2875-2541
Zheng, Rui http://orcid.org/0000-0001-5553-2870
Chen, Lili http://orcid.org/0000-0001-5485-718X
Sun, Yanan http://orcid.org/0000-0003-3678-6255
Zhang, Zhong http://orcid.org/0000-0001-7491-8218
Shi, Wei http://orcid.org/0000-0002-6718-7952
Ge, Dongtao http://orcid.org/0000-0002-7892-6925
Article History
Received: 28 October 2017
Accepted: 30 March 2018
First Online: 6 April 2018
Compliance with ethical standards
:
: The authors declare no competing financial interest.