Moppett, I. K., White, S., Griffiths, R., & Buggy, D. (in press). Tight intra-operative blood pressure control versus standard care for patients undergoing hip fracture repair - Hip Fracture Intervention Study for Prevention of Hypotension (HIP-HOP) trial: study protocol for a randomised controlled trial. Trials, 18(1), https://doi.org/10.1186/s13063-017-2066-5