About the Authors

Ulrich Siering

ulrich.siering@iqwig.de

Affiliation Institute for Quality and Efficiency in Health Care (IQWiG), Cologne, Germany

Michaela Eikermann

Affiliation Institute for Research in Operative Medicine (IFOM), Faculty of Health, Department of Medicine, Witten/Herdecke University, Cologne, Germany

Elke Hausner

Affiliation Institute for Quality and Efficiency in Health Care (IQWiG), Cologne, Germany

Wiebke Hoffmann-Eßer

Affiliation Institute for Quality and Efficiency in Health Care (IQWiG), Cologne, Germany

Edmund A. Neugebauer

Affiliation Institute for Research in Operative Medicine (IFOM), Faculty of Health, Department of Medicine, Witten/Herdecke University, Cologne, Germany

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: US ME EAN. Performed the experiments: US EH WH. Analyzed the data: US WH. Contributed reagents/materials/analysis tools: ME. Wrote the manuscript: US ME WH EH EAN.