Olak, Jana
Nguyen, Minh Son http://orcid.org/0000-0001-9568-596X
Nguyen, Thuy Trang
Nguyen, Bui Bao Tien
Saag, Mare
Funding for this research was provided by:
Estonian Science Foundation Grant (9255)
Article History
Received: 30 January 2018
Accepted: 5 April 2018
First Online: 26 April 2018
Compliance with ethical standards
: This study was registered and approved by the Human Research Ethics Committee of the Da Nang University of Medical Technology and Pharmacy and performed in accordance with the World Medical Association’s Helsinki Declaration. All procedures performed in studies involving human participants were in accordance with these ethical standards. Informed consent letter with detailed descriptions of the aims and procedures of the study was obtained from all individual participants included in the study.
: The authors declare that they have no conflict of interest.