Received: 6 November 2019
Accepted: 21 July 2020
First Online: 31 July 2020
Ethics approval and consent to participate
: This study complies with the Helsinki Declaration and relevant national guidelines and was approved by the Human Research Ethics Committee of the Nepean Blue Mountains Local Health District (Ethics number: 10/16).
: Not applicable, as analysis was conducted retrospectively on data base.
: Authors declare that they have no affiliations with or involvement in any organization or entity with any financial interest, or non-financial interest in the subject matter or materials discussed in this manuscript.