Car versus bicycle.
Ross
David W
DW
DRDR0682@aol.com
Wichman
Carol
C
Mackinnon
Mike
M
D000063:Accidents, Traffic; D001416:Back Pain / Q000209:etiology*; D001642:Bicycling / Q000293:injuries*; D017809:Fatal Outcome; D006801:Humans; D008159:Lumbar Vertebrae; D008297:Male; D008875:Middle Aged; D014187:Transportation of Patients / Q000379:methods*