Özlem Altındağ, Mehmet Karakoç, Neslihan Soran, Hakim Çelik, Necla Çelik, and Şahabettin Selek, “Paraoxonase and Arylesterase Activities in Patients with Rheumatoid Arthritis”, Archives of Rheumatology, vol. 22, no. 4, pp. 132–136, Dec. 2007.