title: Case-control approach to examine diseases for evidence of contagion, including diseases with long latent periods.
mesh_terms: D003141:Communicable Diseases / Q000175:diagnosis* / Q000453:epidemiology; D004196:Disease Outbreaks; D006689:Hodgkin Disease / Q000453:epidemiology; D006801:Humans; D008433:Mathematics; D013997:Time Factors