David O'Brien to United States
This is a "connection" page, showing publications David O'Brien has written about United States.
Connection Strength
0.046
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O'Brien D. Facet joint procedures: issues of utilization and coverage. PM R. 2009 Oct; 1(10):973-4.
Score: 0.046
Connection Strength
The connection strength for concepts is the sum of the scores for each matching publication.
Publication scores are based on many factors, including how long ago they were written and whether the person is a first or senior author.