Chapman Richard C, Wilson Michael E, Gehrig John D
(C.R.C.) Departments of Anesthesiology, Psychiatry and Behavioral Sciences, Psychology, and Anesthesia Research Center, (M.E.W.) Department of Anesthesiology and Anesthesia Research Center, and (J.D.G.) Department of Oral and Maxillofacial Surgery, University of Washington, Schools of Medicine and Dentistry, and College of Arts and Sciences, Seattle, Wash. 98195 U.S.A.
Pain. 1976 Sep;2(3):265-283. doi: 10.1016/0304-3959(76)90005-1.