title: Nokia, Ericsson and others are happier...
mesh_terms: D001921:Brain / Q000528:radiation effects*; D001932:Brain Neoplasms / Q000209:etiology*; D006240:Happiness; D006801:Humans; D015994:Incidence; D009381:Neoplasms, Radiation-Induced / Q000209:etiology*; D012307:Risk Factors; D013689:Telephone