Berg K, Maki B, Williams J. Clinical and laboratory measures of postural balance in an elderly population. Arch Phys Med Rehabil 1992; 73 (4): 1073-80.
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Berg, K., Maki, B., Williams, J. (1992). Clinical and laboratory measures of postural balance in an elderly population. Arch Phys Med Rehabil, 73(4).
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