Text and Data Mining valid from 2018-12-14
Received: 8 November 2018
Accepted: 10 December 2018
First Online: 14 December 2018
Compliance with ethical standards
: The authors declare that they have no conflict of interest.
: This project was approved by a Charles Nicolle ethical committee, Tunis; Tunisia.
: Informed consent was obtained from all individual participants included in the study.