[1] Helios Klinikum Schleswig, Dept Pulmonol, Schleswig, Germany
[2] Univ Kiel, Kiel, Germany
[3] Airway Res Ctr North German Ctr Lung Res DZL, Grosshansdorf, Germany
[4] Aberdeen Royal Infirm, Dept Pathol, Aberdeen, Scotland
[5] Chinese Univ Hong Kong, Fac Med, Hong Kong, Peoples R China
[6] Inst Oncol NN Petrov St Petersburg, Pesochny, Russia
[7] St Petersburg City Canc Ctr, St Petersburg, Russia
[8] LungenClin Grosshansdorf, Grosshansdorf, Germany
[9] Univ Lubeck, Lubeck, Germany