{Reference Type}: Case Reports {Title}: Leflunomide-induced and paraneoplastic ulcers in a rheumatoid arthritis patient. {Author}: Vittori MR;Tang JZ;McCoy WH; {Journal}: JAAD Case Rep {Volume}: 30 {Issue}: 0 {Year}: Dec 2022 暂无{DOI}: 10.1016/j.jdcr.2022.09.022 {Abstract}: