Oh, my aching back!
Marshall
Steve
S
Ergonomic Sciences Corporation, Sunnyvale, Calif., USA. steve@ergosci.com
D001416:Back Pain / Q000209:etiology* / Q000517:prevention & control*; D003201:Computers; D006804:Ergonomics; D006801:Humans; D007374:Interior Design and Furnishings; D009784:Occupational Diseases / Q000209:etiology* / Q000517:prevention & control*; D011187:Posture / Q000502:physiology*