Funding for this research was provided by:
Received: 11 June 2017
Accepted: 6 November 2017
First Online: 21 November 2017
Change Date: 11 February 2019
Change Type: Correction
Change Details: After publication of the original article , it was noticed that the following corrections needed to be implemented.
Ethics approval and consent to participate
: Experiments were carried out in accordance with the German Animal Welfare Legislation, and were approved by the local institutional animal care and research advisory committee (Kiel and Hannover, Germany) and permitted by the local government of Lower Saxony, Germany (reference number: AZ 10AO29).
: The manuscript does not contain any individual person’s data.Not applicable
: The authors declare that they have no competing interests.
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