Dr. Kucuk stated that "To our knowledge, this is the first report from a randomized prospective clinical trial showing the efficacy of a natural tomato lycopene supplement against prostate cancer.
Vegetarian Times - May 2002 - Page 46
I would like to cite an instance which proves the efficacy of clean living on the part of an athlete coupled with the inspiration received from a champion which go a long way to making a champion. Major Taylor
My proposal now is to test a vaccine first on people who have been infected, and if you show some efficacy at this level, you might be able to go further to study uninfected people in a population with a high rate of infection. Luc Montagnier
The metaphor is perhaps one of man's most fruitful potentialities. Its efficacy verges on magic, and it seems a tool for creation which God forgot inside one of His creatures when He made him. Jose Ortega y Gasset
The combined messages about the efficacy of logos and colours in selling cigarettes, helped prompt the government to begin its legislative push to introduce plain packaging.