Letter: Search for microbes in arthritis.
D001168:Arthritis / Q000209:etiology / Q000382:microbiology*; D001172:Arthritis, Rheumatoid / Q000382:microbiology; D002689:Chlamydia / Q000302:isolation & purification; D006801:Humans; D009174:Mycoplasma / Q000302:isolation & purification; D013582:Synovial Fluid / Q000382:microbiology; D014780:Viruses / Q000302:isolation & purification