Article History
Received: 26 July 2019
Revised: 11 February 2020
Accepted: 3 March 2020
First Online: 25 March 2020
Ethics approval and consent to participate
: The study was performed according to the Declaration of Helsinki, and was approved by the Regional Ethical Review Board at Karolinska Institutet in Stockholm, Sweden. Completion of the questionnaire by the respondent was considered implied consent.
: Not applicable.
: The data and the analytical programme are stored on a highly secure institutional server under the supervision of A. Wolk (PI). Investigators may apply to access the study’s deidentified data through contact with the PI.
: The authors declare no competing interests.
: The study was supported by a research grant from the Swedish Cancer Foundation (CF 16 0727), the Swedish Research Council/Research Infrastructures (VR 2015-05997), the Swedish Research Council (VR 2017‐00644) for the Swedish Infrastructure for Medical Population‐based Life‐course Environmental Research (SIMPLER) and the Swedish Research Council for Environment, Agricultural Sciences and Spatial Planning (FR 2016/0004).