There are 4 studies that match your criteria.
Criteria: Freq Range=300 kHz - 300 GHz (RF/mmW/THz),Study Type=Epidemiology,Study Subtype=Cohort Cancer Study,Status=Completed Without Publication

Details - Project ID 175
Lab	Epidemiology Resources Inc
Study Design	800, 1900 MHz (FM, GSM, CDMA) mobile phone use in the US and correlation with brain tumors
Summary	(study on hold until legal issues surrounding confidentiality of billing records clarified)
Citation
Details - Project ID 510
Lab	Johns Hopkins University, USA
Study Design	Radar exposure in MIT radar lab workers and correlation with cancer
Summary	No effects on brain tumor or leukemia incidence
Citation	Hill, DA Bioelectromagnetics, (1985) 6:33-40 Hill, DA Bioelectromagnetics, (1984) 5:131-146 Hill, DG [Dissertation Manuscript], (1988) :-
Details - Project ID 830
Lab	Scientific Center for Hygine, Kiev, Ukraine
Study Design	VHF and UHF Radiobroadcast tower exposure to children in Kiev and correlation with health problems
Summary	Decreased general health and increased functional disturbances
Citation
Details - Project ID 1144
Lab	Northern Ireland Cancer Registry, Queens Universi
Study Design	900, 1800 MHz (GSM) exposure to residents in the UK around a mobile phone base station and correlation with cancer
Summary	No correlation with total cancer or any tumor endpoint evaluated
Citation