(1)
Zufferey, P.; Tamborrini, G.; Gabay, C.; Krebs, A.; Kyburz, D.; Michel, B.; Moser, U.; Villiger, P.; So, A.; Ziswiler, H. R. Recommendations for the Use of Ultrasound in Rheumatoid Arthritis: Literature Review and SONAR Score Experience. Swiss Med Wkly 2013, 143, w13861.