Putz, Cornelia http://orcid.org/0000-0001-6711-7180
Blessing, Ann- Kathrin
Erhard, Sarah
Fiethen, Katharina
Geisbüsch, Andreas
Niklasch, Mirjam
Döderlein, Leonhard
Wolf, Sebastian Immanuel
Dreher, Thomas
Article History
Received: 21 March 2018
Accepted: 4 June 2018
First Online: 20 June 2018
Compliance with ethical standards
: The study was approved by the local ethics committee (S-270/2006).
: The authors declare that they have no conflict of interest.