NR 439 Week 4 Assignment: Research Database NR 439 Week 4 Assignment: Research Database Also read: NR 439 Week 3 Assignment Research Database Assignment Form NR 439 Week 4 Assignment Research Database NR 439 Week 2 Discussion Search for Significant Clinical Issue in a Research Database NR 439 Week 5 Assignment: Reading Research Literature NR 439 Week 6 Assignment, Research Article Critique Final Paper