Funding for this research was provided by:
Vietnam National University HoChiMinh City (B2016-26-01, B2016-26-01)
Vietnam National University HoChiMinh City (B2016-26-01)
Article History
Received: 8 May 2017
Revised: 2 October 2017
Accepted: 9 October 2017
First Online: 20 October 2017