Analysis of interleukin 6-174 and nt565 gene polymorphisms in relation to chronic periodontitis in Macedonians - Atanasovska Stojanovska A, Popovska M, Muratovska I, Daci A, Spiroski M. (FDI 2013 Istanbul, International Dental Journal 2013; 63 (1): 23-24, 2013)