Funding for this research was provided by:
I-CORE program of the Planning and Budgeting Committee and the Israel Science Foundation (1821/12)
Text and Data Mining valid from 2018-10-31
Received: 26 April 2018
Accepted: 19 October 2018
First Online: 31 October 2018
Compliance with ethical standards
: The authors declare that they have no conflict of interest.