VA Study Tracks Biologics Usage, Finds Dramatic Patient-Age Difference Catherine Kolonko | Issue: December 2018 | December 17, 2018 Catherine Kolonko is a medical writer based in Oregon. Reference George MD, Sauer BC, Teng CC, et al. Biologic and glucocorticoid use after methotrexate initiation in patients with rheumatoid arthritis. J Rheumatol. 2018 Oct 1. Page: 1 2 3 | Single Page Share: