About the Authors

Tony Ross-Hellauer


Affiliations Graz University of Technology, Graz, Austria, Know-Center GmbH, Graz, Austria

Lex M. Bouter

Affiliations Amsterdam University Medical Center, Amsterdam, the Netherlands, Vrije Universiteit, Amsterdam, the Netherlands

Serge P. J. M. Horbach

Affiliation Aarhus University, Aarhus, Denmark

Competing Interests

The authors have declared that no competing interests exist.