Document is current

Article History

First Online: 25 October 2018

Compliance with ethical standards

:

: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. This article does not contain any studies with animals performed by the author.

: Informed consent was obtained from all individual participants included in the study.

: The author declares that she has no conflict of interest.