Commentary: Inflammatory and Oxidative Responses Induced by Exposure to Commonly Used e-Cigarette Flavoring Chemicals and Flavored e-Liquids without Nicotine - Caruso, Massimo; Li Volti, Giovanni; Furneri, Pio Maria; Fuochi, Virginia; Emma, Rosalia; Polosa, Riccardo (Frontiers in Physiology, 2018)