Hauser, Ulrike http://orcid.org/0000-0003-0126-2021
Article History
Received: 12 November 2018
Accepted: 10 December 2018
First Online: 4 February 2019
Compliance with ethical standards
:
: The author declares no conflict of interest.
: For this type of study, formal consent is not required.
: Informed consent was obtained from the healthy persons, but not from the patients. According to German health authorities, ethical approval was not necessary since the primary intention of the study was quality assurance and samples were tested anonymised.