About the Authors
- Martina Persson
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* E-mail: Martina.Persson@ki.se
Affiliation Clinical Epidemiology Unit, Department of Medicine–Solna, Karolinska Institutet, Stockholm, Sweden
- Stefan Johansson
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Affiliations Clinical Epidemiology Unit, Department of Medicine–Solna, Karolinska Institutet, Stockholm, Sweden, Department of Clinical Science and Education, Södersjukhuset, Karolinska Institutet, Stockholm, Sweden
- Sven Cnattingius
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Affiliation Clinical Epidemiology Unit, Department of Medicine–Solna, Karolinska Institutet, Stockholm, Sweden
Competing Interests
The authors have declared that no competing interests exist.
Author Contributions
Conceived and designed the experiments: MP SJ SC. Analyzed the data: MP SJ. Wrote the first draft of the manuscript: MP. Contributed to the writing of the manuscript: MP SJ SC. Agree with the manuscript’s results and conclusions: MP SJ SC. Data acquisition: SC. Guarantor of this study: MP SJ SC. All authors have read, and confirm that they meet, ICMJE criteria for authorship.