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Funding
Funding for this research was provided by:
Niedersächsische Ministerium für Wissenschaft und Kultur (ZN 2043)
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Article History
Received: 2 July 2018
Accepted: 5 July 2018
First Online: 21 July 2018
Compliance with ethical standards
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: M. Rühl and U. Kües declare that they have no conflict of interest. K. Lange approved a firstly reviewed manuscript and agreed to submission but died prior to a resubmission of the manuscript upon improvements made based on appreciated good reviewer comments. The paper is dedicated to her memory.
: This article does not contain any studies with human participants or animals performed by any of the authors.
