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[DOI] [PMC free article] [PubMed] [Google Scholar] ISO Biological Evaluation of Medical Devices-Part 5: Tests for in Vitro Cytotoxicity
Its just a thought though

2020 Nov 1 [cited 2021 Apr 1];22(11):20927

Jennifer Pearson, research investigator at the Schroeder Institute and lead author on the study

Exhaling was never the problemit was always about getting the vapor in without letting the minty flavor hit the back of my throat and cause me to sputter on stage

The prevalence of smoking also varies within countries and changes over time so it may be helpful to check local rates for your area as listed in the resources at the end of this section
