Zhu, Kaiyi https://orcid.org/0000-0002-0111-0848
Ou Yang, Tai-Hsien
Dorie, Vincent
Zheng, Tian
Anastassiou, Dimitris
Article History
Received: 15 August 2018
Revised: 12 November 2018
Accepted: 9 December 2018
First Online: 22 January 2019
Conflict of interest
: The authors declare that they have no conflict of interest.
: The code for generating the signatures discussed in this study is available at .