Updates are available Erratum dated 2017-09-22
Click to view Erratum: https://doi.org/10.1186/s12889-017-4709-6
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Authors
Bethge, Matthias https://orcid.org/0000-0002-6417-7812
Mattukat, Kerstin
Fauser, David
Mau, Wilfried
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Funding
Funding for this research was provided by:
German Research Foundation (BE 5885/2-1, MA 6981/2-1)
