Digital subtraction radiography for the assessment of bone changes in rheumatoid arthritis.
Moreland LW, Reddy MS, Koopman WJ, Webber RL, Alarc?n GS, Jeffcoat MK. Digital subtraction radiography for the assessment of bone changes in rheumatoid arthritis. J Rheumatol. 1992 Nov; 19(11):1697-703.