About the Authors

David Hägg

Affiliation Dermatology and Venereology, Public Health and Clinical Medicine, Umea University, Umea, Sweden

Marie Eriksson

Affiliation Umeå School of Business and Economics (USBE), Department of Statistics, Umea University, Umea, Sweden

Anders Sundström

Affiliation Centre for Pharmacoepidemiology (CPE), Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden

Marcus Schmitt-Egenolf

marcus.schmitt-egenolf@dermven.umu.se

Affiliation Dermatology and Venereology, Public Health and Clinical Medicine, Umea University, Umea, Sweden

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: DH ME AS MSE. Analyzed the data: DH ME AS MSE. Wrote the paper: DH AS MSE.