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Knuttinen MG, Zurcher KS, Khurana N, Patel I, Foxx-Orenstein A, Harris LA, Lawrence A, Aguilar F, Sichlau M, Smith BH, Smith SJ.Knuttinen MG, et al.Phlebology. 2021 Feb;36(1):32-37. doi: 10.1177/0268355520947610. Epub 2020 Aug 5.Phlebology. 2021.PMID: 32757696Free article.