Text and Data Mining valid from 2018-08-30
Received: 5 July 2018
Accepted: 23 August 2018
First Online: 30 August 2018
Compliance with ethical standards
: All experiments were conducted in accordance with the human and ethical principles of the University of Leipzig (no. 388/15-ek).
: BO has received reimbursement of travel costs from Randox Laboratories. The authors declare no competing interests.