Symptom assessment in epidemiology: a comparison between two methods.
D000328:Adult; D000740:Anemia / Q000175:diagnosis*; D004812:Epidemiologic Methods; D005069:Evaluation Studies as Topic; D005260:Female; D006306:Health Surveys; D006801:Humans; D007406:Interview, Psychological; D008875:Middle Aged; D014852:Wales