About the Authors

Terhi J. Lohela

Affiliations Department of Anaesthesiology and Intensive Care Medicine, Jorvi Hospital, Helsinki University Hospital, Espoo, Finland, University of Heidelberg, Institute of Public Health, Heidelberg, Germany

Oona M. R. Campbell

Affiliation London School of Hygiene & Tropical Medicine, Faculty of Epidemiology and Population Health, London, United Kingdom

Sabine Gabrysch

sabine.gabrysch@uni-heidelberg.de

Affiliation University of Heidelberg, Institute of Public Health, Heidelberg, Germany

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Had idea for analysis: OMRC SG. Identified datasets: SG. Cleaned and prepared datasets: TJL. Contributed to writing manuscript: TJL OMRC. Analyzed the data: TJL SG. Wrote the paper: SG.