The cockpit radiation was
measured in the pilot seat of a general aviation turboprop airplane through the acrylic plastic windshield at ground level and at various heights above sea level.
Not saying there isn't a risk, but I'd rather read about measurements from a large transport type plane with the normal multilayer thick wind screens.
LA Times article lays out the research results a little better, but reading the conclusions, it isn't clear what brings on the higher mortality rate for pilots vs cabin crew:
http://www.latimes.com/science/scien...903-story.html