Funding for this research was provided by:
Technische Universität München
TUM IGSSE (GSC 81)
Received: 16 November 2020
Accepted: 22 April 2021
First Online: 2 June 2021
Ethics approval and consent to participate
: All patients were routinely treated in the Clinic of Pneumology, Thoracic Oncology, Sleep and Respiratory Critical Care of the Klinikverbund Allgäu in Germany. Data use was approved by the ethic commission of BLAEK (Ethik-Kommission der Bayerischen Landesärztekammer), reference number 19021.
: Not applicable.
: The authors declare that they have no competing interests.