Le, Thi Thu Huong http://orcid.org/0000-0002-3657-8475
Bui, Thuc Quang http://orcid.org/0000-0003-3305-2862
Ha, Thi Minh Thi http://orcid.org/0000-0003-3803-9472
Le, Mai Huong http://orcid.org/0000-0002-5070-7421
Pham, Hong Nam http://orcid.org/0000-0001-5610-9978
Ha, Phuong Thu http://orcid.org/0000-0003-0317-4068
Funding for this research was provided by:
Vietnam-NAFOSTED (106-YS.06-2015.14 (HPT))
Article History
Received: 28 February 2018
Accepted: 8 June 2018
First Online: 9 July 2018
Compliance with ethical standards
:
: The authors declare no conflict of interest. The funding sponsors had no role in the design of the study; in the collection, analyses or interpretation of data; in the writing of the manuscript; and in the decision to publish the results.