Map disclaimer The depiction of boundaries on this map does not imply the expression of any opinion whatsoever on the part of BMJ (or any member of its group) concerning the legal status of any country, territory, jurisdiction or area or of its authorities.

All authors contributed to the preparation, critical review and approved the final manuscript.ДЇunding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.

All authors were involved in the interpretation of data and results. CFC, CA, AC and SR developed the analysis plan.

Correspondence to Dr Christian Fielder Camm, Keble College, Oxford University, Oxford, OX1 3PG, UK Д¬ontributors CFC, AJ, HCS and CA were involved in the development of the survey and acquisition of survey data.

16 British Junior Cardiologists' Association, London, UK.

15 Guy's & St Thomas' Hospital, King's College, Rayne Institute, London, UK.

14 Cardiology Department, Manchester University Hospitals, Manchester, UK.

13 Immediate Past-President, British Cardiovascular Society, London, UK.

12 Chair, Cardiology Specialist Advisory Committee, London, UK.

11 President, British Cardiovascular Society, London, UK.

10 Leeds Institute of Cardiovascular and Metabolic Medicine, University of Leeds, Leeds, UK.

9 Cardiology Department, Leeds General Infirmary, Leeds, UK.

8 Vice-Chair, Cardiology Specialist Advisory Committee, London, UK.

7 Bart's Heart Centre, St Bartholomew's Hospital, London, UK.

6 Cardiology Department, University Hospital Southampton NHS Foundation Trust, Southampton, UK.

5 Nuffield Department of Primary Care Health Sciences, University of Oxford, Oxford, UK.

4 Cardiology Department, Barts Health NHS Trust, London, UK.

3 British Junior Cardiologists Association, London, UK.

2 Department of Cardiology, Royal Berkshire NHS Foundation Trust, Reading, UK.

1 Keble College, Oxford University, Oxford, UK.

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