[1] Copenhagen Univ Hosp Herlev & Gentofte, Resp Med Sect, Dept Internal Med, Hellerup, Denmark
[2] Univ Copenhagen, Dept Immunol & Microbiol, Copenhagen, Denmark
[3] Aarhus Univ, Dept Publ Hlth Environm Work & Hlth, Aarhus, Denmark
[4] Copenhagen Univ Hosp, Dept Resp Med, Hvidovre, Denmark
[5] Univ Copenhagen, Zealand Hosp, Dept Internal Med, Roskilde, Denmark
[6] Univ Copenhagen, Dept Clin Med, Copenhagen, Denmark