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Big science enters the clinic.
Research challenges angioplasty risk in women. The data was collected via telephone survey with doctors, nurses, and health care administrators who work with the elderly. The data collected from these sources were described as estimates, not as actual percentages based on testing or on notations in patient charts. The study was designed to test four different strategies as they effect the patient up to 30 days after the heart attack. Participants were assigned at random to the four groups.