... Philadelphia, PA, USA 4. Research Coordinator at the Pain Management Center of Paducah, Paducah, KY, USA 5. Statistician at the Pain Management Center of Paducah, Paducah, KY, USA Corresponding author: ... Frank J.E. Falco3, Kimberly A. Cash4, Vidyasagar Pampati5 1. Medical Director of the Pain Management Center of Paducah, Paducah, KY and Associate Clinical Professor, Anest-hesiology and ... Merskey H, Bogduk N. Lumbar zygapophysial joint pain. In: Classification of Chronic Pain; Descriptions of Chronic Pain Syndromes and Definition of Pain Terms, 2nd ed; Task Force on Taxonomy of...