Text and Data Mining valid from 2020-01-09
Received: 26 May 2019
Accepted: 9 December 2019
First Online: 9 January 2020
Compliance with ethical standards
: The authors of the present study declare that they have no potential conflict interest to disclose.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee (CAAE: 51654515.1.0000.5257) and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
: All subjects of the study signed an informed consent prior to investigation with all experimental procedures.