modalities (such as integrative medicine, including acupuncture and exercise therapy, neural stimulation, biofeedback, radiofrequency ablation, and trigger point injections) furnished to Medicare beneficiaries who suffer from acute or chronic lower back pain. Such study shall, pursuant to the contract under this paragraph, include an analysis of— (1) scientific research on the short-term and long-term impact of the addition of such coverage on clinical efficacy for pain management of such beneficiaries