G Balzer, A Landrus, I Ovestrud, JM Singer… - Tobacco …, 2023 - tobaccocontrol.bmj.com
Introduction In recent years, the nicotine in e-cigarettes has been available in either a 'free-
base'(unprotonated) or 'nicotine salt'(protonated) form. Additionally, e-cigarette nicotine can …