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[quote=Anonymous]headaches
Madhuri Sudan, Leeka Kheifets, Onyebuchi Arah, Jorn Olsen, Lonnie Zeltzer. Prenatal and Postnatal Cell Phone Exposures and Headaches in Children. Open Pediatrics Medical Journal. 2012 Dec 5; 6(2012):46-52.
Children with cell phone exposure had higher odds of migraines and headache-related symptoms than children with no exposure.

Szyjkowska A, Gadzicka E, Szymczak W, Bortkiewicz A. The risk of subjective symptoms in mobile phone users in Poland - An epidemiological study. Int J Occup Med Environ Health. 2014 Apr 1. 
Headaches were reported significantly more often by the people who talked frequently and long in comparison with other users.  Continuous headache, persisting for longer than 6 hrs since the end of a call, was reported by 26% of the subjects.  Our results show that the mobile phone users may experience subjective symptoms, the intensity of which depends on the intensity of use of mobile phones.

Chu et al., Clinical features of headache associated with mobile phone use: a cross-sectional study in university students. BMC Neurol. 2011 Sep 26;11:115. doi: 10.1186/1471-2377-11-115.
Headache associated with mobile phone use usually showed stereotyped clinical features including mild intensity, a dull or pressing quality, localisation ipsilateral to the side of MP use, provocation by prolonged cell phone  use and often accompanied by a burning sensation.[/quote]

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