title: Questionable performance of a questionnaire.
authors.forename: Sok-Ja
authors.initials: SJ
authors.lastname: Janket
authors.forename: Prashanti
authors.initials: P
authors.lastname: Bollu
authors.forename: Sihai Dave
authors.initials: SD
authors.lastname: Zhao
mesh_terms: D006801:Humans; D010518:Periodontitis / Q000175:diagnosis*; D011237:Predictive Value of Tests; D011795:Surveys and Questionnaires