1. American College of Obstetricians Gynecologists, & American Academy of Pediatrics. (2017). Guidelines for perinatal care (8th ed.). https://www.acog.org/clinical-information/physician-faqs/-/media/3a22e153b67446a6b31fb051e469187c.ashx
2. Ammann G., Belfon K., Conceicao R., Marshall-Taylor S., Thomas M. P. (2020). The state of doula Care in NYC 2020. https://www.nyc.gov/assets/doh/downloads/pdf/csi/doula-report-2020.pdf
3. Scoping studies: towards a methodological framework
4. What are Delphi studies?
5. Betsy Lehman Center for Patient Safety. (2022). Expanding doula support services in Massachusetts: Considerations for successful implementation. https://betsylehmancenterma.gov/assets/uploads/DoulaSupportMA_Report.pdf