title: Statistical and ethical considerations in clinical trials.
mesh_terms: D002986:Clinical Trials as Topic; D003731:Dental Caries / Q000517:prevention & control; D003802:Dentifrices / Q000627:therapeutic use; D004990:Ethics, Dental; D005459:Fluorides / Q000627:therapeutic use; D006801:Humans; D012107:Research Design; D013223:Statistics as Topic
chemical_list: D003802:Dentifrices; D005459:Fluorides