Lin, Jung-Fu
Wu, Junjie
Zhu, Jie
Mao, Zhu
Said, Ayman H.
Leu, Bogdan M.
Cheng, Jinguang
Uwatoko, Yoshiya
Jin, Changqing
Zhou, Jianshi
Article History
Received: 6 June 2014
Accepted: 14 August 2014
First Online: 4 September 2014
Competing interests
: The authors declare no competing financial interests.