Kepekçi, Y., C. Boğa, L. Tamer, A. Çığlı, İclal Meram, and T. İsbir. “Plasma Copper Levels in Ankylosing Spondylitis With Cardiac Involvements: [Kardiak Tutulumu Olan Ankilozan Spondilitisli Olgularda Plazma Bakır Düzeyleri]”. European Journal of Therapeutics, vol. 4, no. 1, Jan. 1993, pp. 1-6, doi:10.58600/eurjther.19930401-1125.