Does performing high- or low-risk coronary artery bypass graft surgery bias the assessment of risk-adjusted mortality rates of hospitals? (관상동맥우회로술의 위험 수준이 병원내사망률 평가 결과에 미친 영향 분석)
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- Health Policy and Management
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- v.17 no.3
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- pp.87-105
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- 2007