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Sham knee surgery study

Common knee surgery does very little for some, study suggests
by Pam Belluck, New York Times, 25 December 2013

The following quotation comes from a story in the Wall Street Journal:

"Doctors have a bad tendency to confuse what they believe with what they know," said Dr. Järvinen [one of the study's authors], an orthopedic resident and adjunct professor at Helsinki University Central Hospital.

The WSJ included this graphic

Submitted by Paul Alper