Chotirmall, SH, Rothnie, K, Müllerová, H, Hurst, JR, Smeeth, L, Davis, K, Thomas, SL and Quint, J (2016). Validation of the Recording of Acute Exacerbations of COPD in UK Primary Care Electronic Healthcare Records. [Data Collection]. PLOS One. https://doi.org/10.1371/journal.pone.0151357

Forbes, H, Bhaskaran, K, Thomas, SL, Smeeth, L, Clayton, T and Langan, S (2014). Clinical code list - COPD codes. [Data Collection]. London School of Hygiene & Tropical Medicine, London, United Kingdom. https://doi.org/10.17037/DATA.165.

Forbes, H and Strongman, H (2021). Clinical codelist - CPRD Gold - chronic obstructive pulmonary disease. [Data Collection]. London School of Hygiene & Tropical Medicine, London, United Kingdom. https://doi.org/10.17037/DATA.00002687.

Iwagami, M, Caplin, B, Smeeth, L, Tomlinson, LA and Nitsch, D (2018). Clinical Codelist - Read codes for COPD. [Data Collection]. London School of Hygiene & Tropical Medicine, London, United Kingdom. https://doi.org/10.17037/DATA.00000859.

Iwagami, M, Caplin, B, Smeeth, L, Tomlinson, LA and Nitsch, D (2018). Clinical Codelist - Read codes for Coronary Heart Disease. [Data Collection]. London School of Hygiene & Tropical Medicine, London, United Kingdom. https://doi.org/10.17037/DATA.00000860.

Langan, S, Smeeth, L, Margolis, DJ and Thomas, SL (2013). Herpes Zoster Vaccine Effectiveness against Incident Herpes Zoster and Post-herpetic Neuralgia in an Older US Population: A Cohort Study. [Data Collection]. PLOS Medicine. https://doi.org/10.1371/journal.pmed.1001420

Maringe, C, Fowler, H, Rachet, B and Fernandez, MAL (2017). Reproducibility, reliability and validity of population-based administrative health data for the assessment of cancer non-related comorbidities. [Data Collection]. PLOS One. https://doi.org/10.1371/journal.pone.0172814.s001

Muzambi, R (2021). Clinical codelist - Chronic Obstructive Pulmonary Disease ICD-10. [Data Collection]. London School of Hygiene & Tropical Medicine, London, United Kingdom. https://doi.org/10.17037/DATA.00002587.

Muzambi, R (2020). Clinical codelist - Chronic Obstructive Pulmonary Disease ICD-10 codes. [Data Collection]. London School of Hygiene & Tropical Medicine, London, United Kingdom. https://doi.org/10.17037/DATA.00002037.

Muzambi, R (2021). Clinical codelist - Chronic Obstructive Pulmonary Disease Read codes. [Data Collection]. London School of Hygiene & Tropical Medicine, London, United Kingdom. https://doi.org/10.17037/DATA.00002586.

Muzambi, R (2020). Clinical codelist - Chronic Obstructive Pulmonary Disease read codes. [Data Collection]. London School of Hygiene & Tropical Medicine, London, United Kingdom. https://doi.org/10.17037/DATA.00002036.

Tunnicliffe, L and Warren-Gash, C (2022). Clinical codelist - COPD ICD10 codes. [Data Collection]. London School of Hygiene & Tropical Medicine, London, United Kingdom. https://doi.org/10.17037/DATA.00002873.

Tunnicliffe, L and Warren-Gash, C (2022). Clinical codelist - COPD ICD9 codes. [Data Collection]. London School of Hygiene & Tropical Medicine, London, United Kingdom. https://doi.org/10.17037/DATA.00002872.