title: Cross-sectional studies.
authors: Bern, Switzerland, and Corfu, Greece.
authors: Nikolaos
authors: N
authors: Pandis
mesh_terms: D015982:Bias; D015986:Confounding Factors, Epidemiologic; D003430:Cross-Sectional Studies / Q000706:statistics & numerical data*; D018865:Dental Research / Q000706:statistics & numerical data; D006801:Humans; D064887:Observational Studies as Topic / Q000706:statistics & numerical data; D015995:Prevalence; D012107:Research Design / Q000706:statistics & numerical data*