title: From observational studies to randomized trials: asking the right question at the right time.
authors.forename: James D
authors.initials: JD
authors.lastname: Neaton
authors.forename: Andrew S
authors.initials: AS
authors.lastname: Mugglin
mesh_terms: D001294:Attitude to Health; D015982:Bias; D015984:Causality; D015986:Confounding Factors, Epidemiologic; D032921:Consensus; D016021:Epidemiologic Studies; D007722:Health Knowledge, Attitudes, Practice; D006304:Health Status; D006801:Humans; D009909:Oral Health; D016032:Randomized Controlled Trials as Topic; D012107:Research Design; D013997:Time Factors; D016896:Treatment Outcome