New Releases from NCBI BookshelfBenefit assessment of bupropion, cytisine, nicotine and varenicline for smoking cessation in severe tobacco dependence: IQWiG Reports – Commission No. A22-34 [Internet].​Benefit assessment of bupropion, cytisine, nicotine and varenicline for smoking cessation in severe tobacco dependence: IQWiG Reports – Commission No. A22-34 [Internet].