Table 1:

Demographics of survey participation on world map with countries and their corresponding respondents

Regions worldwide within ESTS	Countries with corresponding units/centres participating in the survey
Europe with UK/Ireland region (139)	Italy: 20, Germany: 14, Spain: 11, Switzerland: 10, France: 9, Belgium: 8, Austria: 3, Czech Republic: 2, Denmark: 3, Greece: 6, Hungary: 4, Netherlands: 7, Poland: 2, Portugal: 2, Sweden: 2, Turkey: 5, UK: 8, Ukraine: 2, Ireland: 1, Luxembourg: 1, Finland: 1, Belarus: 1, Macedonia: 1, Moldova: 1, Norway: 3, Lithuania: 1
Asian region (12)	Japan: 7, India: 3, Rep of Korea: 1, Malaysia: 1
Middle-East region (4)	Saudi Arabia: 1, Israel: 1, Jordan: 1
African region (2)	Algeria: 1, Morocco: 1
USA/Canada (22)	USA: 8, Brazil: 8, Canada: 3, Mexico: 2, Argentina: 1
Australia (2)

ESTS: European society of thoracic surgeons.