Article History
Received: 18 October 2019
Accepted: 12 May 2020
First Online: 16 July 2020
Compliance with ethical guidelines
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: V. Sitaropoulou, H.N. Yilmaz, B. Yilmaz and N. Kucukkeles declare that they have no competing interests.
: For this article no studies with human participants or animals were performed by any of the authors. All studies performed were in accordance with the ethical standards indicated in each case. This retrospective study was performed after consultation with the institutional ethics committee and in accordance with national legal requirements. For images or other information within the manuscript which identify patients, consent was obtained from them and/or their legal guardians. The study was approved by the ethical committee of Marmara University, Institute of Health Sciences (no: 24.12.2014-11).