title: Clostridium perfringens and rheumatoid arthritis.
mesh_terms: D001172:Arthritis, Rheumatoid / Q000382:microbiology*; D003016:Clostridium perfringens / Q000302:isolation & purification*; D005243:Feces / Q000382:microbiology*; D005260:Female; D006801:Humans; D008297:Male