Funding for this research was provided by:
Netherlands Organization for International Cooperation in Higher Education
Received: 1 August 2018
Accepted: 30 April 2019
First Online: 15 May 2019
Ethics approval and consent to participate
: The consent forms were given together with the questionnaire to the participants. Signed consent was acquired from all participants after the researchers explained that answering the questionnaire was voluntary and that the anonymity of the participants was guaranteed. Ethical approval for the study was given by the Institutional Review Board of the Hanoi Medical University (Decision No 174/HMU-IRB). The investigator also had the approval of the Scientific and Technical Committees of the other three universities to conduct the data collection.
: Not applicable.
: The authors declare that they have no competing interests.
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