Methotrexate.
D000014:Abnormalities, Drug-Induced / Q000209:etiology; D001168:Arthritis / Q000188:drug therapy; D001172:Arthritis, Rheumatoid / Q000188:drug therapy; D004347:Drug Interactions; D006801:Humans; D007231:Infant, Newborn; D008727:Methotrexate / Q000009:adverse effects / Q000494:pharmacology / Q000627:therapeutic use*; D009220:Myositis / Q000188:drug therapy; D009369:Neoplasms / Q000139:chemically induced; D011565:Psoriasis / Q000188:drug therapy; D012216:Rheumatic Diseases / Q000188:drug therapy*
D008727:Methotrexate