OMICS International OMICS International is a scientific organization that drives the progress of research through open access journals and organizes international conferences, The best in science news, commentary, and research. Journal of Biometrics & Biostatistics Journal of Biometrics & Biostatistics Volume 9, Issue 2 Replacement of Directed Graph by Acyclic Directed Graph and Its Application in Biostatistics Tsitsiashvili Gurami, Bulgakov Victor and Losev Alexandr A Brand New Approach to Sets in Mathematics Nasip Demirkus and Divin Alkan Empirical Comparison of the Breslow Estimator and the Kalbfleisch Prentice Estimator for Survival Functions Fang Xia , Jing Ning and Xuelin Huang Using Statistical Techniques and Replication Samples for Missing Values Imputation with an Application on Metabolomics Akram Yazdani and Azam Yazdani The Human Hand and Foot in Evolution and Art The Effects of Wearing Footwear Clifford Qualls , Peter Evans , Antonio Perciaccante , Raffaella Bianucci , Donatella Lippi and Otto Appenzeller Trends of Tuberculosis in Somaliland8217s Young Children after the Conflict and the Role Khat Marfishes Play Its Transmission Mohamed Hassan