El Damaty, Ahmed http://orcid.org/0000-0003-0146-8943
Eltanahy, Ahmed
Unterberg, Andreas
Baechli, Heidi
Funding for this research was provided by:
Universitätsklinikum Heidelberg
Article History
Received: 9 March 2020
Accepted: 28 April 2020
First Online: 7 May 2020
Compliance with ethical standards
:
: 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.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional research committee (Heidelberg University) and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. For this retrospective type of study, formal consent is not required.
: No conflict of interest to be declared.