Brammerloo, Y. G. A. http://orcid.org/0000-0003-1775-5867
Hol, J. C.
Theunissen, C. M.
Langenhoff, B. S.
Article History
First Online: 5 February 2019
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.
: All authors declare that they have no competing interests.
: For this type of study, formal consent is not required.