Text and Data Mining valid from 2019-07-13
Received: 6 May 2019
Accepted: 8 July 2019
First Online: 13 July 2019
Compliance with ethical standards
: The authors have no actual or potential conflict of interest to declare, including any financial, personal or other relationships with other people or organizations within 3 years of beginning the submitted work that could inappropriately influence, or be perceived to influence, their work.
: The study was performed according to the principles of the Declaration of Helsinki and was approved by the Ethics Committee of the Faculty of Medicine.
: Written informed consent was obtained from each patient or from an authorized family member.