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Authors
Holopainen, Sari https://orcid.org/0000-0002-3271-4468
Väänänen, Veli-Matti
Vehkaoja, Mia
Fox, Anthony D.
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Funding
Funding for this research was provided by:
Maj ja Tor Nesslingin Säätiö
Osk. Huttusen säätiö
Haavikko Foundation
Kuopion Luonnon Ystäväin yhdistys
University of Helsinki including Helsinki University Central Hospital
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Article History
Received: 6 June 2020
Accepted: 23 July 2021
First Online: 7 August 2021
Declarations
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: There are no conflicts of interest.
: All authors consent to participate.
: All authors consent to publish.
: There are no ethical, welfare or environmental implications of the experimental design and procedures of this study. The unfertilized mallard eggs used in this study were obtained from mallard farmers. Down was from legally shot mallards in Finland and from abandoned eider nests in Denmark.
