Fischer, F., Gibbons, C., Coste, J., Valderas, J., Rose, M., & Leplège, A. (2018). Measurement invariance and general population reference values of the PROMIS Profile 29 in the UK, France, and Germany. Quality of Life Research : An International Journal of Quality of Life Aspects of Treatment, Care and Rehabilitation. https://doi.org/10.1007/s11136-018-1785-8 (Original work published 2018)