Received: 14 May 2020
Accepted: 23 November 2020
First Online: 1 December 2020
Ethics approval and consent to participate
: Ethical approval was attained from the Ethics Committee of the Faculty of Medicine, Public Health and Nursing, Universitas Gadjah Mada, Yogyakarta, Indonesia (KE/FK/0815/EC/2017). Participation was voluntary, and confidentially was insured. Information statement regarding this study was informed to all potential participants. If they were willing to participate, then written informed consent was obtained.
: Not applicable.