title: Efficiency of clinical trials: selective inclusion of study subjects.
mesh_terms: D002327:Cariostatic Agents / Q000627:therapeutic use*; D002648:Child; D002986:Clinical Trials as Topic; D004245:DMF Index; D003731:Dental Caries / Q000209:etiology; D003802:Dentifrices / Q000627:therapeutic use; D004311:Double-Blind Method; D005260:Female; D005459:Fluorides / Q000627:therapeutic use; D006801:Humans; D008297:Male; D010710:Phosphates / Q000627:therapeutic use; D011153:Population; D012107:Research Design; D012306:Risk; D012737:Sex Factors; D014070:Tooth / Q000033:anatomy & histology
chemical_list: D002327:Cariostatic Agents; D003802:Dentifrices; D010710:Phosphates; D005459:Fluorides