[1] Univ Southern Denmark, Inst Reg Hlth Res, Odense, Denmark
[2] Zealand Univ Hosp Naestved, Dept Resp Med, Naestved, Denmark
[3] Aarhus Univ Hosp, Dept Resp Dis & Allergy, Aarhus, Denmark
[4] Rigshosp, Copenhagen Acad Med Educ & Simulat CAMES, Copenhagen, Denmark
[5] Univ Southern Denmark, Dept Clin Res, Odense Resp Res Unit ODIN, Odense, Denmark
[6] Odense Univ Hosp, Dept Resp Med, Odense, Denmark
[7] Univ Bristol, Southmead Hosp, North Bristol NHS Trust Acad Resp Unit, Dept Resp Med, Bristol, Avon, England
[8] Zealand Univ Hosp, Dept Internal Med, Roskilde, Denmark