Sach, T. H., Foss, A. J. E., Gregson, R. M., Zaman, A., Osborn, F., Masud, T., & Harwood, R. H. (2007). Falls and health status in elderly women following first eye cataract surgery: An economic evaluation conducted alongside a randomised controlled trial. BMJ Group.

Sach, Tracey H., Alexander J E. Foss, Richard M. Gregson, Anwar Zaman, Francis Osborn, Tahir Masud, i Rowan H. Harwood. Falls and Health Status in Elderly Women Following First Eye Cataract Surgery: An Economic Evaluation Conducted Alongside a Randomised Controlled Trial. BMJ Group, 2007.

Sach, Tracey H., et al. Falls and Health Status in Elderly Women Following First Eye Cataract Surgery: An Economic Evaluation Conducted Alongside a Randomised Controlled Trial. BMJ Group, 2007.