Article History
Received: 14 April 2019
Accepted: 13 June 2019
First Online: 28 June 2019
Compliance with Ethical Standards
:
: The research was not sponsored by an outside organization. We (all of the authors) have agreed to allow full access to the primary data and to allow the journal to review the data if requested.
: The authors declare that they have no conflict of interest.
: This study conformed to the Helsinki Declaration.
Free to read: This content has been made available to all.