Validation of chronic obstructive pulmonary disease recording in the Clinical Practice Research Datalink (CPRD-GOLD).

Quint, JK; Müllerova, H; DiSantostefano, RL; Forbes, H; Eaton, S; Hurst, JR; Davis, K; Smeeth, L; (2014) Validation of chronic obstructive pulmonary disease recording in the Clinical Practice Research Datalink (CPRD-GOLD). BMJ open, 4 (7). e005540. ISSN 2044-6055 DOI: https://doi.org/10.1136/bmjopen-2014-005540

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