Low-dose radiation.
D006801:Humans; D008297:Male; D009381:Neoplasms, Radiation-Induced / Q000401:mortality; D009784:Occupational Diseases / Q000517:prevention & control*; D011829:Radiation Dosage; D011832:Radiation Injuries / Q000517:prevention & control*; D011835:Radiation Protection; D013366:Submarine Medicine; D014481:United States