hepatitis b (hb) disease occurs with high risk behaviors in the different communities. aim of this study was to find out some of local customs in lifestyle that might be risk factors for transmitting this disease in order to design the educational programs and control it periodically in chaharmahal va bakhtiari, iran. this was a case-control study, carried out on patients with hb and the contro...

background: since preterm delivery is an important problem in obstetrics, it is necessary to know the risk factors. periodontal disease is an infectious disease and infection is risk factor for preterm delivery. respecting to the mechanisms of preterm delivery and because involved mediators in this procedure are synthesized in periodontal disease, gum disease is investigated as risk factor for ...