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To assess cross-cultural adaptation, and to validate the parent’s version of a health-related quality-of-life instrument, the Childhood Health Assessment Questionnaire (CHAQ) was investigated after its translation into Japanese. A total of 132 subjects were enrolled: 63 patients with juvenile idiopathic arthritis (JIA) (34 systemic and 29 polyarticular) and 69 healthy children. The CHAQ distinguished...
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