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Extracting principal diagnosis, co-morbidity and smoking status for asthma research: evaluation of a natural language processing system

Qing T Zeng*, Sergey Goryachev, Scott Weiss, Margarita Sordo, Shawn N Murphy and Ross Lazarus

BMC Medical Informatics and Decision Making 2006, 6:30  doi:10.1186/1472-6947-6-30

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