PTGS2 and colorectal neoplasm: However, PubMed certain search strategy was developed for PubMed's MeSH database: "Colorectal Neoplasms/drug therapy"[Mesh] OR "Colorectal Neoplasms/prevention and control"[Mesh] OR "Colorectal Neoplasms/therapy"[Mesh]) AND "Cyclooxygenase 2 Inhibitors/therapeutic use"[Mesh]).