Husham A. Aldaoseri, Naael Hussein Ali and Fires Al-Mubarak 2023. The effect of biological anti-TNF-α therapy, originator and biosimilar, used to treat ankylosing spondylitis was studied based on clinical and blood counts and an inflammatory marker. Journal of Population Therapeutics and Clinical Pharmacology. 30, 5 (Apr. 2023), 615–620. DOI:https://doi.org/10.47750/jptcp.2023.30.05.061.