Funding for this research was provided by:
Universitas Airlangga (886/UN3/2018)
Received: 4 September 2019
Accepted: 29 November 2019
First Online: 11 December 2019
Ethics approval and consent to participate
: The study was approved by The Ethical Committee of Health Research, Faculty of Medicine, Universitas Airlangga. The certificate number was 241/EC/KEPK/FKUA/2018 (20 August 2018). Consent to participate is not applicable (the study used the isolates in the Balai Besar Laboratorium Kesehatan Daerah, Surabaya). The consent was waived by the Ethical Committee.
: Not applicable.
: The authors declare that they have no competing interests.