Erdem, Fazile Hatipoglu, et al. “ Evaluation of Serum Paraoxonase and Arylesterase Activities in Ankylosing Spondylitis Patients ”. Clinics, vol. 65, no. 2, Jan. 2010, pp. 175-9, https://doi.org/10.1590/S1807-59322010000200009.