title: Beneficial effects of leucovorin after methotrexate treatment in rheumatoid arthritis: a case report.
authors.forename: J R
authors.initials: JR
authors.lastname: Polk
mesh_terms: D001172:Arthritis, Rheumatoid / Q000188:drug therapy*; D006801:Humans; D002955:Leucovorin / Q000627:therapeutic use*; D008297:Male; D008727:Methotrexate / Q000009:adverse effects / Q000037:antagonists & inhibitors*; D008875:Middle Aged; D013280:Stomatitis / Q000139:chemically induced / Q000517:prevention & control*
chemical_list: D002955:Leucovorin; D008727:Methotrexate