This certificate certifies that Ahmed Mostafa Ahmed Muhammed successfully completed an online course called PH207x: Health in Numbers: Quantitative Methods in Clinical Public Health Research offered by HarvardX through edX. The certificate was issued on February 1st, 2013 and was signed by Marcello Pagano, Professor of Statistical Computing at Harvard School of Public Health, and E. Francis Cook, Professor of Epidemiology at Harvard School of Public Health and Harvard Medical School.