Funding for this research was provided by:
Text and Data Mining valid from 2018-10-20
Received: 3 August 2017
Accepted: 3 October 2018
First Online: 20 October 2018
Ethics approval and consent to participate
: The study was conducted in accordance with the Declaration of Helsinki. Consent was not required due to the retrospective nature of the study and as some of the patients had deceased. The study protocol was approved and the informed consent was deemed unnecessary by the Hacettepe University Ethics Committee.
: The authors declare that they have no competing interests.
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