EuroQol research projects:1. The validity, feasibility and usefulness of using the EQ-5D-Y as a routine measure of outcome in a facility for children with chronic illness.2. A comparison of the two proxy versions of the EQ-5D-Y instrument in acutely ill and chronically ill children in South Africa. A cross sectional analytical descriptive study3. Cross-sectional validity and feasibility of the EQ-5D-Y as a generic Health Related Quality of Life outcome measure in children and adolescents with Juvenile Rheumatoid Arthritis in Western Cape, South Africa4. Validity and Reliability testing of the EQ-5D-Y Proxy version 1 in young children in South Africa