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Article History

Received: 20 August 2020

Accepted: 9 November 2020

First Online: 19 November 2020

Ethics approval and consent to participate

: Ethic approval has been obtained by the Ethikkommission, Charité – Universitätsmedizin Berlin, EA4/047/20. For this type of study formal consent is not required because it is a retrospective, single-center study and the Ethikkommission, Charité – Universitätsmedizin Berlin approved the waiver of consent. The study adhered to the ethical standards of the Declaration of Helsinki. An informed written consent was provided for surgery. No administrative permission was required to access the raw data from the Charité – Universitätsmedizin Berlin.

: Not Applicable.

: All authors certify that they have no affiliations with or involvement in any organization or entity with any financial interest (such as honoraria; educational grants; participation in speakers’ bureaus; membership, employment, consultancies, stock ownership, or other equity interest; and expert testimony or patent-licensing arrangements), or non-financial interest (such as personal or professional relationships, affiliations, knowledge or beliefs) in the subject matter or materials discussed in this manuscript.SW has served as consultant for: Allergan, Novartis, Beyer, Heidelberg engineering.AKM has served as consultant for: Allergan, Novartis.