RxNorm, a standardized nomenclature for clinical drugs, is produced by the National Library of Medicine (NLM). In this context, a clinical drug is a pharmaceutical product given to (or taken by) a patient with a therapeutic or diagnostic intent. In RxNorm
J. Handler, C. Feied, M. Smith, and M. Gillam. AMIA Annu Symp Proc, (2006)Handler, Jonathan Feied, Craig Smith, Mark Gillam, Michael United States AMIA ... Annual Symposium proceedings / AMIA Symposium. AMIA Symposium.