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\bibitem{Duan_etal2020} {\textquotedblleft}\textit{The penetration of reactive oxygen and nitrogen species across the stratum corneum}{\textquotedblright}. Duan J, Ma M, Yusupov M, Cordeiro RM, Lu X, Bogaerts A, Plasma Processes And Polymers  (2020).   http://doi.org/10.1002/ppap.202000005

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