About the Authors

Sarah Laxhmi Chellappa

Affiliations Centre for Chronobiology, Psychiatric Hospital of the University of Basel, Basel, Switzerland, The CAPES Foundation/Ministry of Education of Brazil, Brasilia, Brazil

Roland Steiner

Affiliation Department of Physics, University of Basel, Basel, Switzerland

Peter Blattner

Affiliation Federal Office of Metrology (METAS), Bern-Wabern, Switzerland

Peter Oelhafen

Affiliation Department of Physics, University of Basel, Basel, Switzerland

Thomas Götz

Affiliation Centre for Chronobiology, Psychiatric Hospital of the University of Basel, Basel, Switzerland

Christian Cajochen

Christian.Cajochen@upkbs.ch

Affiliation Centre for Chronobiology, Psychiatric Hospital of the University of Basel, Basel, Switzerland

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: SLC RS PB PO TG CC. Performed the experiments: SLC RS PB PO TG CC. Analyzed the data: SLC RS PB PO TG CC. Contributed reagents/materials/analysis tools: SLC RS PB PO TG CC. Wrote the paper: SLC RS PB PO TG CC.