Received: 22 August 2019
Accepted: 18 October 2019
First Online: 1 November 2019
Ethics approval and consent to participate
: Medical and Health Research Ethics Committee (MHREC) Faculty of Medicine Gadjah Mada University—Dr. Sardjito Hospital Yogyakarta, Indonesia has approved the protocol as a quality assurance study as stated in Ref: KE/FK/1140/EC/2016. Written consent had been obtained from all study subjects after sufficient information regarding this study provided.
: Not applicable.
: The authors declare that they have no competing interests.