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Shapiro MF, Wenger NS (November 1995). "Rethinking utilization review". The New England Journal of Medicine. 333 (20): 1353–4. doi:10.1056/NEJM199511163332012. PMID7566031.
Porter ME (December 2010). "What is value in health care?". The New England Journal of Medicine. 363 (26): 2477–81. doi:10.1056/NEJMp1011024. PMID21142528.
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