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39 The effects of nicotine on various immune system components are shown in Figure 1
secondly, sometimes patients switch tobacco products, for example, during weekdays, they use smokeless tobacco, but at weekends, they smoke or use more than one tobacco product [21]
Longitudinal associations of e-cigarette use with cigarette, marijuana, and other drug use initiation among US adolescents and young adults: Findings from the population assessment of tobacco and health study (Waves 1-6)
The e-cigarette puffing curve was trapezoidal, determining a vaping capacity of 55 mL, vaping time of 2 s, and vaping interval of 30 s ( Oral and nasal exposure towers: The temperature and humidity of the equipment environment were kept relatively stable at 20C24C and 60% 5% humidity