There are 2 studies that match your criteria.
Criteria: Freq Range=300 kHz - 300 GHz (RF/mmW/THz),Study Type=Epidemiology,Study Subtype=Subjective Symptoms (e.g., Headaches, Hypersensitivity, Fatigue),Status=Completed Without Publication

Details - Project ID 836
Lab	Seoul National University, Korea
Study Design	900, 1800 MHz (CW, CDMA) mobile phone use in Korea and correlation with subjective symptoms
Summary	Increased dizziness, nausea, eye pain, fatigue, insomnia, heat sensations, and ear irritation with frequent cell phone use
Citation
Details - Project ID 853
Lab	Scientific Center for Hygine, Kiev, Ukraine
Study Design	450 MHz (NMT) exposure from mobile phone use in the Ukraine and correlation with subjective complaints
Summary	Increased correlation with headache in younger users of NMT (analoge) mobile phones
Citation