Trends in seroprevalence of hepatitis B virus, hepatitis C virus, human immunodeficiency virus and syphilis infections in each of the four largest transfusion centres in Serbia, 2005–2017.
p: statistical significance of trends; HBV: hepatitis B virus; HCV: hepatitis C virus; HIV: human immunodeficiency virus; NS: Blood transfusion Institute of Vojvodina in Novi Sad; BG BTI: Blood Transfusion Institute of Serbia in Belgrade; BG MMA: Institute for Transfusiology and Haemobiology of the Military Medical Academy, Belgrade; NI: Blood Transfusion Institute, Clinical Centre Niš.