Funding for this research was provided by:
EuroQol Research Foundation (2013240)
Directorate General of Higher Education of Indonesia (58.18/E4.4/2014)
Received: 21 February 2018
Accepted: 13 June 2018
First Online: 22 June 2018
Ethics approval and consent to participate
: The study was approved by the Health Research Ethics Committee, YARSI University, Jakarta number 008/KEP-UY/BIA/V/2014.Respondents who participated signed informed consent forms.
: Not applicable
: The authors declare that they have no competing interests.
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