[Occupational spinal diseases in tractor drivers and farmers].
D000328:Adult; D000382:Agricultural Workers' Diseases / Q000209:etiology*; D005859:Germany, East; D006801:Humans; D008875:Middle Aged; D013122:Spinal Diseases / Q000209:etiology*
Berufsbedingte Wirbelsäulenschäden bei Traktoristen und Landwirten.