3.3. Data collection

The link to the e‐questionnaire, along with the study information, was published on the website of the Organisation for Respiratory Health in Finland between 6 November 2017 and 28 February 2018. Potential respondents were informed about the possibility of participating in this study via the website and Facebook page of the Organisation for Respiratory Health in Finland. In addition, the opportunity to use a printed questionnaire was offered in Helsinki at an event organized by a local respiratory society for people with lung diseases. Those wanting to participate received the printed questionnaire, the study information sheet and a stamped addressed envelope.