A 67-year-old man was switched from methotrexate therapy to leflunomide, at which time he had no rheumatoid nodules.是什么意思_A 67-year-old man was switched from methotrexate therapy to leflunomide, at which time he had no rheumatoid nodules.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句