title: Influence of cytotoxic agents on the development of lymphoid neoplasms in connective tissue diseases.
mesh_terms: D006801:Humans; D007945:Leukemia, Lymphoid / Q000150:complications*; D008223:Lymphoma / Q000150:complications*; D008727:Methotrexate / Q000009:adverse effects / Q000627:therapeutic use; D008947:Mixed Connective Tissue Disease / Q000150:complications*; D011565:Psoriasis / Q000188:drug therapy; D013167:Spondylitis, Ankylosing / Q000532:radiotherapy
chemical_list: D008727:Methotrexate