Zufferey, Pascal, Giorgio Tamborrini, Cem Gabay, Andreas Krebs, Diego Kyburz, Beat Michel, Urs Moser, Peter Villiger, Alexander So, and Hans Ruedi Ziswiler. ‚ÄúRecommendations for the Use of Ultrasound in Rheumatoid Arthritis: Literature Review and SONAR Score Experience‚ÄĚ. Swiss Medical Weekly 143, no. 5152 (December 15, 2013): w13861. Accessed June 19, 2024. https://smw.ch/index.php/smw/article/view/1793.