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Kovács, Attila
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First Online: 7 June 2020
Compliance with ethical guidelines
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: A. Kovács declares that he has no competing interests.
: For this article, no studies with human participants or animals were performed by any of the authors. All studies performed were in accordance with the ethical standards indicated in each case.
: The supplement containing this article is not sponsored by industry.
Free to read: This content has been made available to all.
