Noriyuki Namura; Kazuya Kamada; Takahumi Hagiwara; Kanae Takahashi; Kiyoshi Matsui. Disease Activity and Changes in the Fibrosis-4 Index in Patients With Rheumatoid Arthritis Treated With Methotrexate for a Short Period. Archives of Rheumatology 2025, 40, 053-062.