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. 2019 Apr 26;2(4):e192851. doi: 10.1001/jamanetworkopen.2019.2851

Figure. Nonprescribed Fentanyl Positivity Among Urine Drug Test Results Positive for Cocaine or Methamphetamine.

Figure.

Dots represent monthly fentanyl positivity values; shaded areas, binomial 95% CIs.