1. Department of Surgery; Barwon Health; Geelong Victoria Australia
2. Department of Specialist General Surgery; The Royal Melbourne Hospital; Parkville Victoria Australia
3. Breast Service, The Royal Women's Hospital; The University of Melbourne; Parkville Victoria Australia
4. Department of Surgery; Royal Brisbane and Women's Hospital; Herston Queensland Australia
5. Department of Surgery, Austin Health; The University of Melbourne; Heidelberg Victoria Australia
6. Department of Surgery; Western Health; Footscray Victoria Australia
7. Department of Surgery; Nepean Hospital; Kingswood New South Wales Australia
8. Department of Surgery; University of Sydney Clinical School, Nepean Hospital; Kingswood New South Wales Australia
9. Biostatistics Unit; Barwon Health; Geelong Victoria Australia
10. School of Medicine; Deakin University; Geelong Victoria Australia
11. Department of Surgery, Barwon Health; Deakin University; Geelong Victoria Australia