Text and Data Mining valid from 2018-04-28
Received: 24 February 2018
Accepted: 23 April 2018
First Online: 28 April 2018
Compliance with ethical standards
: The author is the director of a software development company (MSE (Aust) PL).
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional research committee and with the 1964 Helsinki declaration and its later amendments.
: The institutional ethics committee approved the study (NSPHEC 2015-LNR-021).