Funding for this research was provided by:
Kementerian Riset, Teknologi dan Pendidikan Tinggi (P/1786/UN23/14/PN/2019)
Received: 5 September 2019
Accepted: 10 January 2020
First Online: 1 February 2020
Ethics approval and consent to participate
: This study was approved by the Ethics Committee of the Faculty of Medicine, Jenderal Soedirman University. Written informed consents were obtained from all participants.
: Not applicable.
: The authors declare that they have no competing interests.