Merschin, David
Häne, Richard
Tohidnezhad, Mersedeh
Pufe, Thomas
Drescher, Wolf
Article History
Received: 26 February 2018
Accepted: 13 March 2018
First Online: 22 March 2018
Compliance with ethical standards
: The study has been approved by the Ethic Committee of the Friedrich-Alexander-Universität Erlangen-Nürnberg (Application No.: 330_15 B) and has been performed in accordance with the ethical standards in the 1964 Declaration of Helsinki. Furthermore, the study has been performed in accordance with the regulations of the US Health Insurance Portability and Accountability Act (HIPAA).
: David Merschin, Richard Häne, Thomas Pufe, and Mersedeh Tohidnezhad do not have any conflict of interest. Wolf Drescher works as a consultant for Zimmer Biomet and as an instructor for B. Braun Aesculap.