Acknowledgements The authors would like to thank Dr Lauren Jacobowitz and Dr Gwendolyn Quinn for their assistance with this project.
Contributors A0 and SF contributed significantly to data analysis and manuscript writing/review. EF and BK were responsible for data abstraction, manuscript writing and review. SN is responsible for overall study design and oversight, as well as manuscript writing and review. She is the guarantor.
Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.
Competing interests SN is a Nexplanon trainer for Organon. The remaining authors have no competing interest/no conflict of interest.
Patient and public involvement Patients and/or the public were not involved in the design, or conduct, or reporting, or dissemination plans of this research.
Patient consent for publication Not applicable.
Ethics approval The Institutional Review Board at New York University Grossman School of Medicine approved this study on 23 September 2021 (i21-01131). The Board granted a waiver of informed consent for this retrospective medical record review.
Provenance and peer review Not commissioned; externally peer reviewed. Data availability statement No data are available.
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A Correction to this paper has been published:
https://doi.org
The Retraction Note was updated to reflect reception of statements of disagreement from all authors.
This article has been retracted.Please see the Retraction Notice for more detail:
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