First Online: 16 August 2019
Ethics approval and consent to participate
: The present study has received ethical clearance and was approved by the Faculty of Nursing Ethical Committee of the Universitas Indonesia on 17 April 2017. Written informed consent was obtained from all respondent, and respondents received written contracts, which stated they could withdraw from participation at any time during the study.
: Not applicable
: The authors declare that they have no competing interests.