Polivka, Jiri Jr.
Altun, Irem
Golubnitschaja, Olga
Article History
Received: 23 January 2018
Accepted: 29 January 2018
First Online: 8 February 2018
Compliance with ethical standards
: Not applicable.
: The authors declare that they have no conflict of interest.
: Patients have not been involved in the study.
: No experiments have been performed including patients and/or animals.