Cyclooxygenase 1Prostaglandin-Endoperoxide SynthasesCyclooxygenase 2Cyclooxygenase 2 InhibitorsCyclooxygenase InhibitorsDinoprostoneIsoenzymesMembrane ProteinsProportional Hazards ModelsElectron Transport Complex IVPrognosisRisk FactorsFollow-Up StudiesCohort StudiesKaplan-Meier EstimateDNA Polymerase I