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After incubation at 22 1C and 60 3% relative humidity for 48 h, the smoke from DNC cigarettes and 3R4F reference cigarettes (University of Kentucky Lexington, KY, USA) was generated using a smoking machine (Model SML2000, Anhui, China) in accordance with the ISO 3308 Standard Smoking procedure: puff volume 35 mL, puff duration 2 s, 60 s time interval between puffs, and no ventilation holes were blocked ( Gas chromatography-mass spectroscopy analysis of nicotine and minor alkaloids The filter disc was extracted with a 5% NaOH aqueous solution for 30 min, then triethylamine dichloromethane and an internal standard were added and mixed

They conclude that while quitting cigarettes reduces the risk of lung cancer, using vaping as a means to do so may reduce the benefits

Dermatitis artefacta: a retrospective analysis

[89] [86] An academic inquiry in October 1991 concluded that portions of his doctoral dissertation were plagiarisms and he had acted improperly