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\bibitem{Fridman_etal2018} {\textquotedblleft}\textit{The plasma treatment unit : an attempt to standardize cold plasma treatment for defined biological effects}{\textquotedblright}. Fridman A, Lin A, Miller V, Bekeschus S, Wende K, Weltmann K-D, Plasma medicine \textbf{8}, 195 (2018).   http://doi.org/10.1615/PLASMAMED.2018026881

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