https://www.buffalo.edu/ubreporter/archive/vol31/vol31n33/n11.html
20 Jul 2000:
VOLUME 31, NUMBER 33. THURSDAY, July 20, 2000. Study warns of the "healthy-worker effect". Industries fail to use appropriate comparisons, create innate bias, UB researcher says. . By LOIS BAKER. News Services Editor. Employees should be skeptical