Tarek Elghetany and colleagues: PT POC and meter acceptability

http://www.ncbi.nlm.nih.gov/pubmed/19913526

Petersen JR, Vonmarensdorf HM, Weiss HL, Elghetany MT.
Use of error grid analysis to evaluate acceptability of a point of care prothrombin time meter.
Clin Chim Acta. 2010 Feb;411(3-4):131-4. Epub 2009 Nov 12.