Sage, Cindy Personal digital assistant (PDA) cell phone units produce elevated extremely-low frequency electromagnetic field emissions. [electronic resource] - Bioelectromagnetics Jul 2007 - 386-92 p. digital Publication Type: Journal Article ISSN: 0197-8462 Standard No.: 10.1002/bem.20315 doi Subjects--Topical Terms: Cell PhoneComputers, HandheldElectromagnetic FieldsEnvironmental ExposureHumans