PT - JOURNAL ARTICLE AU - T Moore AU - R W Dorner AU - J Zuckner TI - Hidden rheumatoid factor in seronegative juvenile rheumatoid arthritis. AID - 10.1136/ard.33.3.255 DP - 1974 May 01 TA - Annals of the Rheumatic Diseases PG - 255--257 VI - 33 IP - 3 4099 - http://ard.bmj.com/content/33/3/255.short 4100 - http://ard.bmj.com/content/33/3/255.full SO - Ann Rheum Dis1974 May 01; 33