Doppler ultrasonographic characteristics of superficial and deep-flow signals in the knee joint pannus of patients with rheumatoid arthritis. Issue 5 (27th April 2007) - Kasukawa, Reiji; Shio, Kiori; Kanno, Yukiko; Sato, Ai; Takahashi, Atsushi; Yamadera, Yukio; Kanno, Takashi