title: [Leaded gasoline and the problem of randomized studies].
mesh_terms: D004992:Ethics, Medical; D005260:Female; D005742:Gasoline / Q000032:analysis; D006801:Humans; D007854:Lead / Q000009:adverse effects* / Q000032:analysis; D008297:Male; D008403:Mass Screening / Q000379:methods*; D009369:Neoplasms / Q000139:chemically induced; D013223:Statistics as Topic
chemical_list: D005742:Gasoline; D007854:Lead
vernacular_title: Bleibenzin-zum Problem der randomisierten Studie