Suzanne Bakken Sookyung Hyun Carol Friedman Stephen B. Johnson ISO reference terminology models for nursing: Applicability for natural language processing of nursing narratives. 615-622 2005 74 I. J. Medical Informatics 7-8 http://dx.doi.org/10.1016/j.ijmedinf.2005.01.002 db/journals/ijmi/ijmi74.html#BakkenHFJ05