wiggy , if there was a lot of research into cosmic radiation then we wouldnt be having this debate , the fact that there are so many varying opinions from doctors , radiologists and even us is because there has not been a conclusive report carried out on the topic ...
and until someone comes up with the definitive answer using a properly carried out survey ( long / short haul,male/female (pre/post pregnency ) latitude/longitude,hours , altitudes and all the correct statistical analysis then we wont really know
until they do i am happy to piece together an idea based on all the research to date...which is why i started this thread
ta