Text and Data Mining valid from 2020-04-07
Received: 25 March 2020
Accepted: 31 March 2020
First Online: 7 April 2020
Ethics approval and consent to participate
: Ethics approval was not necessary for the comprehensive review article. All co-authors have agreed to participate.
: All co-authors have head and approved the final manuscript.
: The authors declare there are not competing interests.