Articles citing the Health Navigator NLP engine or Clinical Concept Vocabulary:

 

Griffey RT, Pines JM, Farley HL, et.al.
Chief Complaint–Based Performance Measures: A New Focus for Acute Care Quality Measurement.
Annals Emerg Med.
2015 Apr;65(4):387-95.

Conway M, Dowling JN, Chapman WW.
Using chief complaints for syndromic surveillance: a review of chief complaint based classifiers in North America.
J Biomed Inform.
2013 Aug;46(4):734-43.

Malmström T1, Huuskonen O, Torkki P, Malmström R.
Structured classification for ED presenting complaints – from free text field-based approach to ICPC-2 ED application.
Scand J Trauma Resusc Emerg Med.
2012 Nov 24;20:76.

Phillips, Trevor G., et al.
In search of a controlled vocabulary for emergency department chief complaint: a comparison of four published chief complaint lists.
Advances in Disease Surveillance
2008;5:52

Kuykendal AR, Tintinalli J, Biese K.
ED chief complaint categories for a medical student curriculum.
Int J Emerg Med.
2008 Jun;1(2):139-43.

Grafstein E, Bullard MJ, Warren D, Unger B; CTAS National Working Group.
Revision of the Canadian Emergency Department Information System (CEDIS) presenting complaint list version 1.1.
CJEM.
2008 Mar;10(2):151-73.

Lu, Hsin-Min, et al.
Ontology-enhanced automatic chief complaint classification for syndromic surveillance.
Journal of Biomedical Informatics 41.2
(2008): 340-356.

And 20 or more other articles.