Frima, H. http://orcid.org/0000-0002-5913-5685
Michelitsch, C.
Beks, R. B.
Houwert, R. M.
Acklin, Y. P.
Sommer, C.
Article History
Received: 10 April 2018
First Online: 12 November 2018
Compliance with ethical standards
:
: Herman Frima, Christian Michelitsch, Reinier B. Beks, Roderick M. Houwert, Yves P. Acklin and Christoph Sommer declare that they have no conflict of interest.
: 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.