title: Letter: Palindromic rheumatism.
mesh_terms: D000368:Aged; D001172:Arthritis, Rheumatoid / Q000139:chemically induced*; D005260:Female; D006801:Humans; D008610:Menthol / Q000009:adverse effects*; D008875:Middle Aged; D009566:Nitrates / Q000009:adverse effects*; D009573:Nitrites / Q000009:adverse effects*
chemical_list: D009566:Nitrates; D009573:Nitrites; D008610:Menthol