Bluetooth Technology – Side Effects

We have been told for years that there was nothing to worry about if you had high voltage power lines running through your back yard. Studies are now showing that there is a definite effect. Mobile phones might be causing us physical problems. Now we are presented with a technology that we will be setting in front of, keyboards, mice, etc. – being constantly bombarded with these ultra high frequency radio waves! What research has gone into testing for any effects this might have on the human body?