Funding for this research was provided by:
Research grant from the North Estonia Medical Centre
Article History
Received: 25 March 2020
Accepted: 28 February 2021
First Online: 15 March 2021
Declarations
:
: Tallinn Ethics Committee for Medical Research (no. 1972) approved the study and waived the need for informed consent. The approval included permission to access the raw data from Thoracic Oncology Database.
: Not applicable.
: Authors have no conflicts of interests in regard to this publication.