National Center for Biotechnology Information NCBI NLM MEDLINE therapy humans pubmed abstract nih national institutes of health national library of medicine treatment outcome research support non-u.s. gov't adult female male N.I.H. Extramural young adult Surveys and Questionnaires Randomized Controlled Trial follow-up studies smoking cessation / methods* computer-assisted / methods* global health international cooperation internet / statistics & numerical data* smoking / epidemiology pmid:19640833 pmc2725004 doi:10.1093/ntr/ntp090 ricardo f muñoz alinne z barrera eliseo j pérez-stable language* patient education as topic / statistics & numerical data* smoking / ethnology smoking cessation / ethnology smoking cessation / statistics & numerical data* smoking prevention* computer-assisted / statistics & numerical data tobacco use disorder / epidemiology tobacco use disorder / therapy