Khan, Mushtaq Ahmad
Chen, Wen
Ullah, Asmat
Fu, Zhuojia
Funding for this research was provided by:
China Scholarship Council (CSC), the National Science Funds of China (11572111, 11372097)
Article History
Received: 8 January 2017
Accepted: 27 June 2017
First Online: 18 July 2017
Competing interests
: The authors declare that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.