Text and Data Mining valid from 2019-04-15
Received: 21 December 2018
Accepted: 9 April 2019
First Online: 15 April 2019
Compliance with Ethical Standards
: We received no funding for this work.
: All procedures performed in study participants were in accordance with the ethical standards of the institutional research committee.
: Informed consent was obtained from all individual participants included in the study.