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Article History

Received: 19 January 2022

Accepted: 27 June 2022

First Online: 5 July 2022

Declarations

:

: The data used in this study belongs to the Thoracic Tumor Registry (TTR) managed by the Spanish Lung Cancer Group (SLCG). The registry was approved in 2016 by the Spanish Agency for Drugs and Medical Devices (AEMPS) and is registered on the database (NCT02941458). The TTR is an observational study (patient registry) of prospectively and retrospectively collected patient information.The protocol approval was obtained from the institutional review board of Puerta de Hierro- Majadahonda University Hospital (Madrid) (no. PI 148/15). The requirement for informed consent was exempted by the ethics institutional review board of Puerta de Hierro- Majadahonda University Hospital (Madrid). The data is de-identified and holds no identifying patient information, and therefore, written informed consent was not.required for this study. The study was performed in accordance with the Helsinki Declaration.

: Not applicable.

: The authors have no competing interests as defined by BMC, or other interests that might be perceived to influence the results and/or discussion reported in this paper.