N. TURFANER, N. SÜT, A. KAYPMAZ, and F. SİPAHİOĞLU, “Frequency of Helicobacter Pylori and Factors Affecting it in Patients Attending Check-up Policlinic of Cerrahpaşa Medical Faculty”, Cerrahpaşa Medical Journal, vol. 37, no. 1, pp. 1–4, Jul. 2014.