Qiao, Na
Xu, Xingliang
Hu, Yuehua
Blagodatskaya, Evgenia
Liu, Yongwen
Schaefer, Douglas
Kuzyakov, Yakov
Article History
Received: 27 January 2015
Accepted: 30 October 2015
First Online: 25 January 2016
Competing interests
: The authors declare no competing financial interests.