title: Use of primary data leads to unsupportable conclusions and policy options.
authors.affiliation: The Fertilizer Institute, Washington, DC 20024, USA. wcherz@tfi.org
authors.forename: William C
authors.initials: WC
authors.lastname: Herz
authors.forename: Jesus I Grave
authors.initials: JI
authors.lastname: de Peralta
mesh_terms: D000544:Alzheimer Disease / Q000453:epidemiology* / Q000401:mortality; D004781:Environmental Exposure / Q000009:adverse effects* / Q000706:statistics & numerical data; D006291:Health Policy; D006801:Humans; D011320:Primary Health Care