Nurses' back injury: reducing the strain.
D000293:Adolescent; D000328:Adult; D001416:Back Pain / Q000517:prevention & control*; D001696:Biomechanical Phenomena; D006801:Humans; D007318:Inservice Training; D009741:Nursing Staff, Hospital / Q000193:education*; D009784:Occupational Diseases / Q000517:prevention & control*