title: The need for ecological validity in studies of pain and ethnicity.
authors.forename: Gary B
authors.initials: GB
authors.lastname: Rollman
mesh_terms: D004463:Ecology; D006297:Health Services Accessibility; D006301:Health Services Needs and Demand; D006801:Humans; D010146:Pain / Q000208:ethnology*; D010147:Pain Measurement