Article info
- Correspondence to Dr Viktor Molander, Clinical Epidemiology Division, Karolinska Institutet, Stockholm, Sweden; viktor.molander{at}ki.se
Citation
Publication history
- Received June 24, 2020
- Revised September 6, 2020
- Accepted September 14, 2020
- First published October 8, 2020.
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- Previous version (8 October 2020).
- Previous version (18 November 2020).
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Supplementary Data
This web only file has been produced by the BMJ Publishing Group from an electronic file supplied by the author(s) and has not been edited for content.
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