Article History
Received: 31 October 2017
Accepted: 31 January 2018
First Online: 16 April 2018
Compliance with ethical standards
:
: The authors must indicate whether they have/had a financial relationship (within the last 3 years) with any organization that sponsored the research. They should also confirm that they have full control of all primary data and they agree to allow the journal to review their data if requested.