Betty Ford Lecture Sharon Walsh - AMERSA
Betty Ford Lecture Sharon Walsh - AMERSA
Betty Ford Lecture Sharon Walsh - AMERSA
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Oral Opioid Self-Administration:Progressive Ratio Drug vs. Money7Number of Ratios Completed for Drug6543210Placebo 20 40 200 400 100 200Oxycodone (mg) Tramadol (mg) Codeine (mg)Babalonis, Lofwall, Nuzzo and <strong>Walsh</strong> (2011) unpublished results28