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Journal Article What's the Answer? Get access Dorothy E. Voss Dorothy E. Voss 1Assistant Professor of Physical Therapy Northwestern University Medical School Chicago, Illinois Search for other works by this author on: Oxford Academic Google Scholar Physical Therapy, Volume 49, Issue 9, September 1969, Pages 1029–1030, https://doi.org/10.1093/ptj/49.9.1029 Published: 01 September 1969