Sidhu VS, Graves SE, Buchbinder R, et al. CRISTAL: protocol for a cluster randomised, crossover, non-inferiority trial of aspirin compared to low molecular weight heparin for venous thromboembolism prophylaxis in hip or knee arthroplasty, a registry nested study. BMJ Open 2019;9:e031657. doi: 10.1136/bmjopen-2019-031657
This article was previously published with an error.
The second paragraph under the ‘Study Governance’ section on the eighth page has been updated from:
The AOANJRR has overall responsibility for the study. The AOANJRR is owned by the Australian Orthopaedic Association (AOA) and is funded by the Australian Federal Government. The AOA holds General Liability insurance cover and compensation will be provided to any patient who suffers harm from trial participation. Proof of insurance cover has been submitted to all ethics committees approving the trial.
to:
The Trial is sponsored by the University of New South Wales (UNSW) and any participant claims will be responded to under UNSW’s Clinical Trials insurance.