McDonald CJ, Fung K, Wang Y, Lynch P, Hook J, Vreeman D.Towards a standardized HL7 clinical data capture tool – with a trial implementation in NLM’s personal health record. 10th International HL7 Interoperability Conference. May 2009.
Vreeman DJ, Abhyankar S, McDonald CJ.Unit conversions between LOINC codes Published June 19, 2017 [Letter]. Journal of the American Medical Informatics Association, 1–3. http://doi.org/10.1093/jamia/ocx087.