Barth, D. A. http://orcid.org/0000-0003-0812-3024
Riedl, J. M.
Posch, F.
Smolle, M. A.
Kasparek, A.-K.
Niedrist, T.
Szkandera, J.
Stöger, H.
Pichler, M.
Stotz, M.
Gerger, A.
Article History
Received: 11 December 2018
Accepted: 18 December 2018
First Online: 22 January 2019
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: The study was approved by the IRB of the medical university of Graz prior any patient-related activities were performed (No. 25-458 ex 12/13).
: Written informed consent was not obtained from individual patients, because this is not mandated in Austria for retrospective database studies given approval by an ethics committee.
: The dataset for this study is not publicly available by request of the local ethic committee in order to protect the anonymity of the patients.