HLA-DRB1 and rheumatoid arthritis: PRE-RA group: - PRE-RA arm: Individualized education and tips about rheumatoid arthritis based on genotype (HLA-DRB1) + autoantibody (RF/CCP) (n 71). - PRE-RA arm Plus: PRA-RA plus one-on-one interview for interpretation & behavior change through motivational interviewing (n 70)