Received: 2 February 2020
Accepted: 11 March 2020
First Online: 20 March 2020
Ethics approval and consent to participate
: Ethics approval was granted by the South Western Sydney Local Health District Human Research Ethics Committee (LNR/16/LPOOL/104).All eligible patients were sent a patient information sheet by mail (Additional file InternalRef removed: Appendix S1). The patient information sheet informed patients of the nature of the study, that they would be contacted by telephone in 2 weeks time and that they could opt out of being contacted. Patients who did not opt out were contacted by telephone. Participants provided informed consent verbally over the telephone.
: Not applicable.
: The authors declare that they have no competing interests.