Correspondence: Author response to Cao

Affiliations

• ¹ Department of Health Professions, Macquarie University, Sydney, Australia.
• ² Institute for Musculoskeletal Health, The University of Sydney, Sydney, Australia.
• ³ Surgical Outcomes Research Centre (SOuRCe), Royal Prince Alfred Hospital, Sydney, Australia; Faculty of Medicine and Health, Central Clinical School, The University of Sydney, Sydney, Australia.