Liu, Ju http://orcid.org/0000-0003-4390-4643
Fu, Bin http://orcid.org/0000-0003-4899-8837
Zhang, Cheng-hu http://orcid.org/0000-0001-8462-3755
Wang, Yu-kuan http://orcid.org/0000-0001-7222-4781
Article History
Received: 29 May 2018
Revised: 30 January 2019
Accepted: 16 June 2019
First Online: 5 August 2019