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Mansfield, KE, Schmidt, SAJ, Darvalics, B, Mulick, A, Abuabara, K, Wong, A, Sørensen, HT, Smeeth, L, Bhaskaran, K, Silva, I, Silverwood, R and Langan, S (2019). Code lists for "Atopic eczema and cancer in England and Denmark: Two population-based matched cohort studies". [Project]. London School of Hygiene & Tropical Medicine, London, United Kingdom. https://doi.org/10.17037/DATA.00001266.