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Surveys of parental reports of asthma overlook many children with active disease. Dependence on parental reports may underestimate the prevalence of serious asthma among poor children. The parents in this study who fail to report asthma may represent a group that perceives their children's disease as less serious a problem despite active purchasing of medications.
Diabetes mellitus was very common in CLI patients, and more often combined with renal impairment and infra-inguinal atherosclerosis. The inflammatory markers TNF-a and neopterin were elevated in patients with diabetes as compared to non-diabetic patients, but this difference cannot explain why CLI is 10 times more frequent in diabetic patients.