QUEST-RA: quantitative clinical assessment of patients with rheumatoid arthritis seen in standard rheumatology care in 15 countries.

Tuulikki Sokka, Hannu Kautiainen, Sergio Toloza, Heidi Mäkinen, Suzan M M Verstappen, Merete Lund Hetland, Antonio Naranjo, Eva Baecklund, Gertraud Herborn, Rolf Rau, Massimiliano Cazzato, Laure Gossec, Vlado Skakic, Feride Gogus, Stanislaw Sierakowski, Barry Bresnihan, Peter Taylor, Catherine McClinton, Theodore Pincus, NN NN