Liu, Xiao-Jing
Miao, Quan
Gel'mukhanov, Faris
Patanen, Minna http://orcid.org/0000-0002-2970-7494
Travnikova, Oksana
Nicolas, Christophe
Ă…gren, Hans
Ueda, Kiyoshi
Miron, Catalin http://orcid.org/0000-0002-8302-7158
Article History
Received: 7 February 2014
Accepted: 29 October 2014
First Online: 1 December 2014
Competing interests
: The authors declare no competing financial interests.