title: Confusion between definitive and exploratory clinical therapy trials: when to believe and when to question.
authors.forename: J Max
authors.initials: JM
authors.lastname: Goodson
mesh_terms: D002986:Clinical Trials as Topic / Q000145:classification* / Q000379:methods / Q000706:statistics & numerical data; D004318:Doxycycline / Q000627:therapeutic use; D004791:Enzyme Inhibitors / Q000627:therapeutic use; D006801:Humans; D061965:Matrix Metalloproteinase Inhibitors; D010518:Periodontitis / Q000601:surgery; D012107:Research Design; D016896:Treatment Outcome
chemical_list: D004791:Enzyme Inhibitors; D061965:Matrix Metalloproteinase Inhibitors; D004318:Doxycycline