[1] Otto Wagner Hosp, Dept Resp & Crit Care Med, Vienna, Austria
[2] Otto Wagner Hosp, Ludwig Boltzmann Inst Copd & Resp Epidemiol, Vienna, Austria
[3] Otto Wagner Hosp, Dept Thorac Surg, Vienna, Austria
[4] Wilhelminenspital Stadt Wien, Inst Pathol & Clin Microbiol, Vienna, Austria
[5] Salzkammergut Klinikum, Dept Pulmonol, Vocklabruck, Austria