Zang, Siwen
Cui, Ying
Cui, Yang
Fei, Wenlei
Funding for this research was provided by:
Development Center for Medical Science and Technology National Health and the Family Planning Commission of the People’s Republic of China
Article History
Received: 2 August 2017
Revised: 4 March 2018
Accepted: 21 May 2018
First Online: 22 June 2018
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.