Rajasekhar, P., Rutter, M., Bramble, M., Wilson, D., East, J., Greenaway, J., …Rees, C. (2012). Achieving high quality colonoscopy: Using graphical representation to measure performance and reset standards. Colorectal Disease, 14(11), 1538-1545. https://doi.org/10.1111/j.1463-1318.2012.03057.x