Essential support.
Couzens-Howard
D
D
Williams
M
M
D001416:Back Pain / Q000517:prevention & control*; D001696:Biomechanical Phenomena; D004509:Education, Nursing, Continuing; D006801:Humans; D009741:Nursing Staff, Hospital / Q000193:education*; D009784:Occupational Diseases / Q000517:prevention & control*; D011187:Posture