Methotrexate and Malignancy in Rheumatoid Arthritis: Evidence, Risks, and Clinical Considerations - Shigeru Iwata; Masahiro Tada; Ryuji Koike; Yuji Yamanishi; Mie Fusama; Haruka Tsuchiya; Kunihiro Yamaoka; Hideto Kameda (Modern Rheumatology, 2026)