title: Need for categorization of exposure in studies of cellular telephone users.
authors.forename: M
authors.initials: M
authors.lastname: Lundquist
mesh_terms: D004574:Electromagnetic Fields / Q000009:adverse effects; D004781:Environmental Exposure / Q000009:adverse effects / Q000032:analysis* / Q000145:classification; D004784:Environmental Monitoring / Q000379:methods*; D004812:Epidemiologic Methods; D062665:Epidemiological Monitoring; D006801:Humans; D013689:Telephone