Article History
Received: 7 September 2017
Accepted: 16 April 2018
First Online: 14 May 2018
Compliance with ethical standards
:
: Author B. Jälevik declares that she has no conflicts of interest. Author A. Szigyarto-Matei declares that she has no conflicts of interest. Author A. Robertson declares that she has no conflicts of interest.
: 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, or comparable ethical standards.
: Informed consent was obtained from all individual participants (and their caretakers) included in the study.