An exploratory study of response shift in health-related quality of life and utility assessment among patients with osteoarthritis undergoing total knee replacement surgery in a tertiary hospital in Singapore
Are symbols useful and culturally acceptable in health-state valuation studies?: an exploratory study in a multi-ethnic Asian population
Is diabetes knowledge associated with health-related quality of life among subjects with diabetes?: a preliminary cross-sectional convenience-sampling survey study among English-speaking diabetic subjects in Singapore
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