Tonsillectomy referrals in an HMO-based population.
D000293:Adolescent; D000328:Adult; D002648:Child; D002675:Child, Preschool; D005260:Female; D006279:Health Maintenance Organizations; D006801:Humans; D008297:Male; D008910:Minnesota; D010818:Practice Patterns, Physicians'; D012017:Referral and Consultation; D014068:Tonsillectomy / Q000706:statistics & numerical data*