title: RHEUMATOID ARTHRITIS--ETIOLOGIC CONSIDERATIONS.
mesh_terms: D001168:Arthritis; D001172:Arthritis, Rheumatoid; D001327:Autoimmune Diseases; D005826:Genetics, Medical; D006801:Humans; D008659:Metabolic Diseases; D009174:Mycoplasma; D011611:Psychosomatic Medicine; D012713:Serum Sickness
keywords: ARTHRITIS, RHEUMATOID; AUTOIMMUNE DISEASES; GENETICS, HUMAN; METABOLIC DISEASES; MYCOPLASMA; PSYCHOSOMATIC MEDICINE; REVIEW; SERUM SICKNESS