No abstract available
Publication types
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Research Support, Non-U.S. Gov't
MeSH terms
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Asthma / physiopathology
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Cohort Studies
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Elective Surgical Procedures
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Health Services Misuse / prevention & control
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Humans
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Ontario
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Preoperative Care / trends*
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Pulmonary Disease, Chronic Obstructive / physiopathology
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Regression Analysis
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Respiratory Function Tests / trends*
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Retrospective Studies
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Surgical Procedures, Operative / methods*