Hou, Beibei
Xie, Mengran
He, Ruoyu
Ji, Minbiao
Trummer, Sonja
Fink, Rainer H. http://orcid.org/0000-0002-6896-4266
Zhang, Luning http://orcid.org/0000-0001-7088-0910
Article History
Received: 6 April 2017
Accepted: 6 October 2017
First Online: 23 October 2017
Competing Interests
: The authors declare that they have no competing interests.