About the Authors

Bernhard Aebischer

Contributed equally to this work with: Bernhard Aebischer, Sven Karstens

Affiliation Health Division, University of Applied Sciences, Bern, Switzerland

Jonathan C. Hill

‡ These authors also contributed equally to this this work.

Affiliation Institute for Primary Care and Health Sciences, Keele University, Staffordshire, Great Britain

Roger Hilfiker

‡ These authors also contributed equally to this this work.

Affiliation School of Health Sciences, University of Applied Sciences and Arts Western Switzerland Valais, Wallis, Switzerland

Sven Karstens

Contributed equally to this work with: Bernhard Aebischer, Sven Karstens

sven.karstens@med.uni-heidelberg.de

Affiliation Department of General Practice and Health Services Research, University Hospital, Heidelberg, Germany

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: BA SK JH RH. Performed the experiments: BA SK. Analyzed the data: BA RH SK JH. Wrote the paper: BA JH SK RH.