Payments from drug companies to physicians are associated with higher volume and more expensive opioid analgesic prescribing

• Mark A. Zezza ,

  Roles Conceptualization, Data curation, Formal analysis, Investigation, Methodology, Project administration, Resources, Supervision, Validation, Visualization, Writing – original draft, Writing – review & editing

  * E-mail: zezza@nyshealth.org

  Affiliation New York State Health Foundation, New York City, New York, United States of America

  http://orcid.org/0000-0003-1905-4343

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• Marcus A. Bachhuber

  Roles Conceptualization, Methodology, Supervision, Validation, Writing – original draft, Writing – review & editing

  Affiliation Division of General Internal Medicine, Albert Einstein College of Medicine, Montefiore Medical Center, Bronx, New York, United States of America

  http://orcid.org/0000-0002-5610-8382

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