About the Authors

Martin Boeker

martin.boeker@uniklinik-freiburg.de

Affiliation Department of Medical Biometry and Medical Informatics, University Medical Center Freiburg, Freiburg i. Br., Baden-Württemberg, Germany

Peter Andel

Affiliation Center de Sandà, Sta, Maria, Grisons, Switzerland

Werner Vach

Affiliation Department of Medical Biometry and Medical Informatics, University Medical Center Freiburg, Freiburg i. Br., Baden-Württemberg, Germany

Alexander Frankenschmidt

Affiliation Department of Urology, University Medical Center Freiburg, Freiburg i. Br., Baden-Württemberg, Germany

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: MB AF. Performed the experiments: PA AF. Analyzed the data: MB WV. Contributed reagents/materials/analysis tools: PA AF. Wrote the manuscript: MB PA WV AF.