Lawrence H Wyatt1
, Stephen M Perle2
, Donald R Murphy3,4
and Thomas E Hyde5 
1
Division of Clinical Sciences, Texas Chiropractic College, 5912 Spencer Highway, Pasadena, TX, 77505 USA
2
Division of Clinical Sciences, University of Bridgeport College of Chiropractic, 126 Park Avenue, Bridgeport, CT, 06604 USA
3
Rhode Island Spine Center, 329 Wickenden Street Providence, RI 02903 USA
4
Department of Community Health, Brown University School of Medicine, Box G-A, Providence, RI 02912 USA
5
2240 NE 202 St, Miami, FL 33180 USA