Tandogdu, Zafer http://orcid.org/0000-0002-5309-3656
Koves, Bela
Cai, Tommaso
Cek, Mete
Tenke, Peter
Naber, Kurt
Wagenlehner, Florian
Johansen, Truls Erik Bjerklund
Article History
Received: 21 July 2019
Accepted: 13 September 2019
First Online: 25 September 2019
Compliance with ethical standards
:
: The authors declare no conflict of interest.
: Ethics committee approval was obtained centrally from Giessen University, Germany (in supplemental material). Local investigators were responsible to obtain any further ethical approval if required by their local jurisdiction.
: This research does not involve any interventions to human participants. The study is conducted as a surveillance study and is not involved as part of an intervention.