Filter ventilation (35%) was achieved by using a split-tipping approach (10-mm wide zone of high-permeability paper), combined with traditional OML ventilation holes
However, male smokers showed greater improvement in negative symptoms after 12 weeks of treatment, controlling for age, years of education, onset age, and baseline body mass index (BMI)
Smoking susceptibility Three questions were included to measure susceptibility to smoking among non-smokers (would you smoke a cigarette if offered to you by a friend, do you think you will smoke a cigarette during the next 12 months, do you think you will smoke cigarettes when you are older)
It is like turning on a natural filter for your saliva
Moreover, the PSD is likely to change as the aerosol travel down the respiratory tree, due to hygroscopic growth and fusion of droplets 39