West, Elizabeth, Barron, David N., Harrison, David, Rafferty, Anne Marie, Rowan, Kathy and Sanderson, Colin (2014) Nurse staffing, medical staffing and mortality in intensive care: an observational study. International Journal of Nursing Studies, 51 (5). pp. 781-794. ISSN 0020-7489 (doi:https://doi.org/10.1016/j.ijnurstu.2014.02.007)

West, Elizabeth, Mays, Nicholas, Rafferty, Anne-Marie, Rowan, Kathy and Sanderson, Colin (2009) Nursing resources and patient outcomes in intensive care: a systematic review of the literature. International Journal of Nursing Studies, 46 (7). pp. 993-1011. ISSN 0020-7489 (doi:https://doi.org/10.1016/j.ijnurstu.2007.07.011)