Lippitz, Bodo E.
Bartek, Jiri Jr.
Mathiesen, Tiit
Förander, Petter
Article History
Received: 30 May 2019
Accepted: 14 April 2020
First Online: 26 June 2020
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. As this manuscript is based on a retrospective study, for this type of study, formal consent is not required.