Rector AL. What's in a code: Towards a
formal account of the relation of ontologies and coding systems. In:
Kuhn KA, Warren JR, Leong T-Y, (eds) Medinfo 2007. Belfus and Hanley;
2007. pp 730-734.
Correction. The original version which appears in the proceedings
incorrectly stated that "excludes" was the preferred mechanism for
dealing with negative findings. This has been corrected.
(See footnote 9 pg 5)
Please use this version for reference.