1. Organ Procurement and Transplantation Network Policies https://optn.transplant.hrsa.gov/governance/policies/
2. Association for Organ Procurement Organizations Donation Service Areas www.aopo.org/donation-service-areas/
3. Organ Procurement and Transplantation Network Administrative Regions www.transplantpro.org/community/regions/
4. National Organ Transplant Act https://www.gpo.gov/fdsys/pkg/STATUTE-98/pdf/STATUTE-98-Pg2339.pdf
5. Organ Procurement and Transplantation Network Final Rule www.ecfr.gov/cgi-bin/text-idx?SID=bb60e0a7222f4086a88c-31211cac77d1&mc=true&node=pt42.1.121&rgn=div5