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BMJOPEN-2012-001622
BMJOPEN-2012-001622
http://dx.doi.org/10.1136/BMJOPEN-2012-001622
A pragmatic method for electronic medical record-based observational studies: developing an electronic medical records retrieval system for clinical research
P356
Q36496236-D0949432-744F-4838-A60B-4399D7D8A770
P356
BMJOPEN-2012-001622
http://dx.doi.org/10.1136/BMJOPEN-2012-001622