RA
METHODS: We performed polymerase chain reaction based       DRB1 and tumor necrosis factor (TNF) genotyping of 309 Caucasian RA and 283       Caucasian control subjects.
METHODS: We performed polymerase chain reaction based       DRB1 and tumor necrosis factor (TNF) genotyping of 309  @OBJECT$  @PREDICAT$  @SUBJECT$  and 283       Caucasian control subjects.