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APA Citation
Ponnappan, R. K., Khan, M., Matzon, J. L., Sheikh, E. S., Tucker, B. S., Pepe, M. D., Tjoumakaris, F. P., & Nassr, A. N. (2015). clinical Differentiation of Upper Extremity Pain Etiologies. Journal of the American Academy of Orthopaedic Surgeons, 23(8), . http://access.bl.uk/ark:/81055/vdc_100026236001.0x00004f