Text and Data Mining valid from 2019-11-30
Received: 24 June 2019
Accepted: 8 November 2019
First Online: 30 November 2019
Compliance with ethical standards
: The authors declare that they have no conflict of interest.
: This study did not impose any additional cost or risk on patients or the healthcare system.
: All participants were included in the study after obtaining informed consent from them or their legally authorized relatives.