Funding for this research was provided by:
Received: 7 September 2021
Accepted: 11 November 2021
First Online: 24 November 2021
: This study was approved by the Swedish Ethical Review Authority (reference 2020-02835). The experiment protocol for involving human data was in accordance with the tenets of the Declaration of Helsinki.
: According to the approved protocol, the requirement for written informed consent was waived because this was a retrospective study that did not affect treatment or follow-up of the patients. Further, all patient data had been previously compiled in our cancer registry and no new data collection was performed. No new tissues were collected, sectioned, stained or otherwise processed.
: No conflicting relationship exists for any author.