title: [It is not yet known whether passive smoking is harmful].
authors.forename: H
authors.initials: H
authors.lastname: Letzel
mesh_terms: D003367:Cotinine / Q000097:blood; D004812:Epidemiologic Methods; D005260:Female; D006801:Humans; D008137:Longitudinal Studies; D008175:Lung Neoplasms / Q000209:etiology*; D008297:Male; D012107:Research Design / Q000592:standards; D012306:Risk; D012680:Sensitivity and Specificity; D014028:Tobacco Smoke Pollution / Q000009:adverse effects*
chemical_list: D014028:Tobacco Smoke Pollution; D003367:Cotinine
vernacular_title: Ob Passivrauchen schädlich ist, weiss man noch nicht.