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Article History
First Online: 23 July 2019
Compliance with ethical standards
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: The article was adapted from <i>Drugs & Aging</i> 2019;36(1):39–51 [CitationRef removed] by employees of Adis International Ltd./Springer Nature, who are responsible for the article content and declare no conflicts of interest.
: The preparation of this review was not supported by any external funding.