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Value of Free-text Comments for Validating Cancer Cases Using Primary-care Data in the United Kingdom
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Validity of smoking prevalence estimates from primary care electronic health records compared with national population survey data for England, 2007 to 2011
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Validity of non-fatal idiopathic serious ventricular arrhythmia in UK-based Clinical Practice Research Datalink
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Validity of estimated prevalence of decreased kidney function and renal replacement therapy from primary care electronic health records compared with national survey and registry data in the United Kingdom
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Validity of diagnoses in the general practice research database
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Validity of cancer diagnosis in a primary care database compared with linked cancer registrations in England. Population-based cohort study
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Validity of bariatric surgery codes in the UK Clinical Practice Research Datalink (CPRD) GOLD compared with Hospital Episodes Statistics
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Validity and completeness of the General Practice Research Database for studies of inflammatory bowel disease
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Validation study of bullous pemphigoid and pemphigus vulgaris recording in routinely collected electronic primary healthcare records in England
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Validation of the recording of idiopathic pulmonary fibrosis in routinely collected electronic healthcare records in England
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Validation of the Recording of Acute Exacerbations of COPD in UK Primary Care Electronic Healthcare Records
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Validation of the diagnosis of venous thromboembolism in general practice database studies
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Validation of the diagnosis of autism in general practitioner records
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Validation of cardiovascular outcomes and risk factors in the Clinical Practice Research Datalink in the United Kingdom
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Validation of Cancer Cases Using Primary Care, Cancer Registry, and Hospitalization Data in the United Kingdom
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