TY - JOUR T1 - Galactic radiation exposure during commercial flights: Is there a risk? JF - Canadian Medical Association Journal JO - CMAJ SP - 1157 LP - 1158 VL - 168 IS - 9 AU - Stanley R. Mohler Y1 - 2003/04/29 UR - http://www.cmaj.ca/content/168/9/1157.abstract ER -