Holtkötter, Hannah
Schwender, Kristina
Wiegand, Peter
Peiffer, Heidi
Vennemann, Marielle
Article History
Received: 8 September 2017
Accepted: 20 October 2017
First Online: 29 October 2017
Compliance with ethical standards
: Body fluid samples were collected with informed consent using procedures approved by the local ethical committee (Ethik-Kommission der Ärztekammer Westfalen-Lippe und der Westfälischen Wilhelms-Universität Münster).