Assertion: placebo's study | /r/HasProperty | conducted by the united states
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Source sentences:
text: Developed millennia ago in China, numerous recent studies conducted by scientists in Europe and the United States have found that acupuncture is at least moderately effective in treating pain and nausea.
text: Later, as scientific study of the effects of acupuncture stimulation and herbal medicine were conducted in Europe and the United States, under the stipulation that acupuncture must adhere to standards of clinical trials set up to judge the safety and efficacy of new drugs, which no other manual medicine in modern use had to adhere to, Dr. Kaptchuk found himself swimming uphill, or against the tide of a strong bias in Western medical journals and research.