Detection of small joint synovitis by ultrasonography: the learning curve of rheumatologists
M-A D’Agostino, J-F Maillefert, R Said-Nahal, M Breban, P Ravaud, M Dougados
Annals of the Rheumatic Diseases Oct 2004, 63 (10) 1284-1287; DOI: 10.1136/ard.2003.012393
