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Contributors Concept and design: NS, CM, SO; acquisition, analysis or interpretation of data: AT, NS, CM, SO; drafting of the manuscript: AT, SO; critical revision of the manuscript for important intellectual content: AT, TM, CM, AI, SO; statistical analysis: AI. AT is the guarantor.
Funding Funding for this study was provided by the University of Pittsburgh Cluster Hire Initiative, the Society for Obstetric Anesthesia and Perinatology/Foundation for Anesthesia Education and Research (SOAP/FAER, AJI). The funding sources were not involved in the collection, analysis or interpretation of data; the writing of the report; or the decision to submit the article for publication.
Competing interests None declared.
Provenance and peer review Not commissioned; externally peer reviewed.
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