Funding for this research was provided by:
National Natural Science Foundation of China (81473281)
Universidade de Macau (MYRG2015-00220-ICMS-QRCM)
Science and Technology Development fund of Macao SAR (043/2011/A2, 029/2015/A1)
Article History
Received: 27 February 2018
Revised: 23 July 2018
Accepted: 26 July 2018
First Online: 14 August 2018
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: This article does not contain any studies with human participants or animals performed by any of the authors.