Ergünay, Koray, et al. “Detection of TT Virus (TTV) by Three Frequently-Used PCR Methods Targeting Different Regions of Viral Genome in Children With Cryptogenic Hepatitis, Chronic B Hepatitis and Hbs Carriers”. The Turkish Journal of Pediatrics, vol. 50, no. 5, Oct. 2008, pp. 432-7, https://turkjpediatr.org/article/view/2463.