Machat, Sibylle
Eisenhuber, Edith
Pfarl, Georg
Stübler, Josef
Koelblinger, Claus
Zacherl, Johannes
Schima, Wolfgang
Article History
Received: 30 January 2019
Accepted: 12 July 2019
First Online: 28 August 2019
Ethics approval and consent to participate
: Due to the study’s retrospective design and because no data was analyzed, no ethics approval and consent to participate were required
: All authors gave informed consent
: The authors declare that they have no competing interests.