A. young - old, middle-old, and old-old
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In the early 1950s, two prominent medical researchers each found a way to protect the world from poliomyelitis, the paralysis-causing disease commonly known as polio. The vaccines created by Dr. Jonas Salk and Dr. Albert Sabin resulted in the near-global eradication of polio
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Answer:
Although the placebo effect is complex, research demonstrated that the placebo effect from sham acupuncture was stronger compared with the effect from a placebo pill (50). These results may be due to more complex medical interventions having a higher placebo effect than medication (51).
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