Funding for this research was provided by:
Research Council of Norway (280537)
Received: 17 August 2021
Accepted: 2 November 2021
First Online: 18 November 2021
: This study was performed at the Cancer Registry of Norway (CRN) after legal and ethical approvals were obtained from the Norwegian Data Inspectorate, the Regional Committee for Medical Research Ethics South-East (2018/1162), and the Norwegian Directorate of Health. Each study participant signed an informed consent.
: Not applicable.
: TKG and JSS note that the Research Council of Norway (governmental agency) awarded an industry‐collaborative grant to the CRN (governmental agency) in 2019 to establish a cohort of offshore petroleum workers. A condition pertaining to such industry‐collaborative grants is that 20% (US $175,000) of the grant was provided by the petroleum industry and 80% (US $700,000) by the Research Council itself with the intention of joining forces for the common interest of improved occupational health among petroleum workers. The grant‐application process was governed by the Research Council without any involvement from the petroleum industry. TKG and JSS are affiliated and employed by the CRN, but the grant does not cover their salary. The remaining authors declare that there are no conflicts of interest.