Received: 18 April 2018
Accepted: 28 August 2018
First Online: 31 August 2018
Ethics approval and consent to participate
: This study was approved by the Institutional Ethics Committee of Bahcesehir University (Dec/6th/2017; 2017–19/04) and conducted in accordance with the latest version of the Declaration of Helsinki. According to the Regulation on Clinical Studies of Drugs and Biological Products in Turkey (no: 29474), which was updated on 13.09.2015, retrospective studies are not subject to the requirement of informed consent of patients. The Institutional Ethics Committee of Bahcesehir University, which operates in accordance with this regulation, waived the requirement of informed consent for this study (Dec/6th/2017; 2017–19/04).
: Not applicable.
: The authors declare that they have no competing interests.
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