A study of health referral patterns.
D002140:California; D002965:Classification; D003153:Community Health Services; D003201:Computers; D004651:Employment; D005069:Evaluation Studies as Topic; D005500:Follow-Up Studies; D006266:Health Education; D006296:Health Services / Q000145:classification / Q000706:statistics & numerical data; D006801:Humans; D007255:Information Services; D007256:Information Systems; D008722:Methods; D008962:Models, Theoretical; D009017:Morbidity; D009042:Motivation; D009862:Online Systems; D010352:Patient Dropouts; D011996:Records; D012017:Referral and Consultation; D012494:Sampling Studies; D012871:Skin Diseases / Q000145:classification; D012940:Social Problems; D012947:Social Work / Q000145:classification