Correct, but your statement assumes that there is some other field that is better attuned to "brain cancer and tissue interaction with EMF over prolonged periods." I dont know.
It does mean that he is most probably aware of trends in brain cancer, such as certain increases. He is also in the front lines in dealing with the possible results of cell phone EMF damage. He also could possibly have very good communication with other brain surgeons dealing with similar problems.
The field is called "epidemiology" or "biophysics", depending on whether you are studying the rate of brain cancers or the mechanism by which EMFs interact with tissue.
It does mean that he is most probably aware of trends in brain cancer, such as certain increases.
Not at all. To a brain surgeon, the world is full of brain tumors. They see lots of brain tumors every day. Meanwhile, cancer patients are even closer to "the front lines" than surgeons, yet they know even less about what causes tumors. In fact, they quickly seize upon whichever half-baked explanation the media offers them, which is why so many cancer patients now run around complaining about their cell phones, instead of cigarettes or environmental chemicals or obesity or -- just possibly -- sheer random chance.
What you're looking for is a paper by an epidemiologist -- a person who is trained in statistics -- that talks about the rate of incidence of brain cancer. The paper needs to be peer-reviewed, because even the people who are trained in statistics tend to make mistakes occasionally, particularly when the mistakes make their research more interesting or more personally profitable.
The field is called "epidemiology" or "biophysics", depending on whether you are studying the rate of brain cancers or the mechanism by which EMFs interact with tissue.
The study of interactions of radiation with biological materials is called radiobiology. Generally, the people who study these kinds of effects on populations are health physicists and epidemiologists.
It does mean that he is most probably aware of trends in brain cancer, such as certain increases. He is also in the front lines in dealing with the possible results of cell phone EMF damage. He also could possibly have very good communication with other brain surgeons dealing with similar problems.