Tsioumas, G. Sotirios 2021. Case Report: The Correction of Post Filler Complication on the Lips (Old Granulomas) with Plasma Exeresis. New Frontiers in Medicine and Medical Research Vol. 15. (Sep. 2021), 79–83. DOI:https://doi.org/10.9734/bpi/nfmmr/v15/11058D.