Patogenesis dan Kesintasan Satu Tahun Pasien Pancreatic Ductal Adenocarcinoma: Kajian Peran Cyclooxygenase-2, Nuclear Factor Kappa-B, Specificity Protein 1, dan Activator Protein-1 = The Role of Cyclooxygenase-2, Nuclear Factor Kappa-B, Specificity Protein 1, and Activator Protein-1 in the Pathogenesis and the One-Year Survival Rate of Patients with Pancreatic Ductal Adenocarcinoma