Identifying heart failure in patients with chronic obstructive lung disease through the Canadian Primary Care Sentinel Surveillance Network in British Columbia: a case derivation study

School of Population and Public Health (Vijh), Centre for Health Services and Policy Research (Wong, Peterson, Ezzat, Gibb) and School of Nursing (Wong, Ezzat), University of British Columbia, Vancouver, BC; Primary Care Research Unit (Grandy) and Department of Family Medicine (Grandy), Dalhousie University, Halifax, NS; Division of Cardiology (Hawkins), University of British Columbia, Vancouver, BC

School of Population and Public Health (Vijh), Centre for Health Services and Policy Research (Wong, Peterson, Ezzat, Gibb) and School of Nursing (Wong, Ezzat), University of British Columbia, Vancouver, BC; Primary Care Research Unit (Grandy) and Department of Family Medicine (Grandy), Dalhousie University, Halifax, NS; Division of Cardiology (Hawkins), University of British Columbia, Vancouver, BC

School of Population and Public Health (Vijh), Centre for Health Services and Policy Research (Wong, Peterson, Ezzat, Gibb) and School of Nursing (Wong, Ezzat), University of British Columbia, Vancouver, BC; Primary Care Research Unit (Grandy) and Department of Family Medicine (Grandy), Dalhousie University, Halifax, NS; Division of Cardiology (Hawkins), University of British Columbia, Vancouver, BC

School of Population and Public Health (Vijh), Centre for Health Services and Policy Research (Wong, Peterson, Ezzat, Gibb) and School of Nursing (Wong, Ezzat), University of British Columbia, Vancouver, BC; Primary Care Research Unit (Grandy) and Department of Family Medicine (Grandy), Dalhousie University, Halifax, NS; Division of Cardiology (Hawkins), University of British Columbia, Vancouver, BC

School of Population and Public Health (Vijh), Centre for Health Services and Policy Research (Wong, Peterson, Ezzat, Gibb) and School of Nursing (Wong, Ezzat), University of British Columbia, Vancouver, BC; Primary Care Research Unit (Grandy) and Department of Family Medicine (Grandy), Dalhousie University, Halifax, NS; Division of Cardiology (Hawkins), University of British Columbia, Vancouver, BC

School of Population and Public Health (Vijh), Centre for Health Services and Policy Research (Wong, Peterson, Ezzat, Gibb) and School of Nursing (Wong, Ezzat), University of British Columbia, Vancouver, BC; Primary Care Research Unit (Grandy) and Department of Family Medicine (Grandy), Dalhousie University, Halifax, NS; Division of Cardiology (Hawkins), University of British Columbia, Vancouver, BC

School of Population and Public Health (Vijh), Centre for Health Services and Policy Research (Wong, Peterson, Ezzat, Gibb) and School of Nursing (Wong, Ezzat), University of British Columbia, Vancouver, BC; Primary Care Research Unit (Grandy) and Department of Family Medicine (Grandy), Dalhousie University, Halifax, NS; Division of Cardiology (Hawkins), University of British Columbia, Vancouver, BC