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1Children's Hospital-Boston, 300 Longwood Avenue, Hunnewell 225, Boston, MA 02115. E-mail address: [email protected] 2K4/732 Clinical Science Center, Department of Orthopaedics and Rehabilitation, University of Wisconsin Hospital and Clinics, 600 Highland Avenue, Madison, WI 53792. E-mail address: [email protected]
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Kim et al. (2009) studied this question.
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