A Systematic Review of Codelists to Identify Chronic Bronchitis and Emphysema in Routine Electronic Healthcare Record Data and Derivation of a Standardized Codelist for Future Rese... by Kwok HHY, Massen GM, Adamson AJ, Kallis C, Lahmami A, Sheikh YA, Elseddig MHE, Mutabchi N, Quint JK

Get full text