1 Alberta PROMs and EQ-5D Research and Support Unit (APERSU), School of Public Health, University of Alberta, 2-040 Li Ka Shing Centre for Health Research Innovation, Edmonton, Alberta, T6G 2E1, Canada. falsayah@ualberta.ca.
2 Health Quality Council of Alberta, Calgary, Alberta, Canada.
3 EuroQol Research Foundation, Rotterdam, The Netherlands.
4 Alberta PROMs and EQ-5D Research and Support Unit (APERSU), School of Public Health, University of Alberta, 2-040 Li Ka Shing Centre for Health Research Innovation, Edmonton, Alberta, T6G 2E1, Canada.