"Dr. John Bonica, professor of anesthesiology at the University of Washington and founder of the Multidisplinary Pain Center, Seattle, spearheaded the movement to recognize pain as an entity unto itself. Bonica and other pain specialists are alarmed by an epidemic of pain throughout the industrialized world. ...He estimates that pain results in the loss of some 700 million workdays a year—in litigation, in compensation, and, mostly, in search for relief."
January 1, 1970
https://en.wikiquote.org/wiki/John_Bonica