Article History
Received: 1 September 2019
Revised: 18 October 2019
Accepted: 31 October 2019
First Online: 22 November 2019
Compliance with ethical standards
: The study was performed in full conformance with Swiss ethical laws, particularly those covering the use of human material in research. A waiver of the Cantonal Ethics Board of the Canton of Zurich was obtained (BASEC-Nr. Req-2017-00946) which states that small quantities of anonymized biological material obtained during investigations of the public prosecutor (e.g., during autopsies) can be used for research purposes without informed consent of the legally authorized representatives.
: The authors declare that they have no conflict of interest.