Yang, Kai E. http://orcid.org/0000-0002-7663-7652
Longcope, Dana W.
Ding, M. D.
Guo, Yang http://orcid.org/0000-0002-9293-8439
Article History
Received: 29 June 2017
Accepted: 17 January 2018
First Online: 15 February 2018
Competing interests
: The authors declare no competing financial interests.