Hemagglutination (tube method) or a microplate method was used to determine the ABO and Rh blood groups of the patients (ScotLab® Avitype Murine Monoclonal IgM Blood Grouping Reagent . Anti-A, Anti-B, Anti-A,B for Slide, Tube, and Microplate Tests). An Immucor Gamma (Galileo model) immunohematology analyzer was used in our study. Statistical analysis of the data was conducted using the SPSS 20.0 program soÑ–wDre for Windows.