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Unit costs for model input for the economic evaluation of levetiracetam add-on compared with standard therapy alone for the treatment of refractory epilepsy
HIRA: Health Insurance Review & Assessment Service (http://www.hira.or.kr). The average currency exchange rate in 2006 was 955.51 Korea Won per US$ 1 (http://www.keb.co.kr/IBS/welcome.jsp)
