Funding for this research was provided by:
Universidade de Macau (MYRG2016-0019-ICMS-QRCM)
National Natural Science Foundation of China (31500831)
Fundo para o Desenvolvimento das Ciências e da Tecnologia (022/2015/A1, 092/2015/A3)
Article History
Received: 6 November 2018
Accepted: 25 February 2019
First Online: 28 February 2019