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Crellin, E, Mansfield, KE, Leyrat, C, Nitsch, D, Douglas, IJ, Root, A, Williamson, E, Smeeth, L and Tomlinson, LA (2017). Clinical Code List - Read Codes - Cardiac Failure. [Data Collection]. London School of Hygiene & Tropical Medicine, London, United Kingdom. https://doi.org/10.17037/DATA.237.

Greenhall, G, Mansfield, KE, Nitsch, D, Iwagami, M, Leyrat, C, Johnston, R, Smeeth, L and Tomlinson, LA (2019). Clinical Codelist - Cardiac Failure. [Data Collection]. London School of Hygiene & Tropical Medicine, London, United Kingdom.