U, K., H. van der D, B. A, B. J, B. Molano, B. Vargas, P. Chiowchanwisawakit, M. Dougados, B. K. El-Zorkany, and Gaudukova,
"Validation of the ASAS Health Index: results of a multicenter international study in 23 countries",
Annual European Congress of Rheumatology EULAR 2016, London, UK, 8-11 June, 2016.