Ключевые слова: 31, absorption, abstract, abuse, addict, addiction, announcement, background, break, campaign, cancer, cessation, chewing, cigarette, cigars, concept, control, day, drug, gum, habit, health, lung, may, medical, medicament, medication, mouth, nicotine, no, nrt, pharmacy, pill, prevention, product, quit, quitting, replacement, smoke, smoke free, smokeless, smoker, stop, substance, symbol, therapy, tissue, tobacco, treatment, world,