Ethical approval

This article does not contain any studies with human participants or animals performed by any of the authors. The Mayo Clinic Institutional Review Board (IRB) acknowledges that based on the responses submitted for this new activity through the Mayo Clinic IRBe Human Subjects Research Wizard tool, and in accordance with the Code of Federal Regulations, 45 CFR 46.102, the above-noted activity does not require IRB review. The Principal Investigator is responsible for the accuracy and reliability of the information submitted through the Human Subjects Research Wizard tool, for following all applicable Federal, State, and local laws and/or regulations, and is also responsible for submitting research studies to the IRB when required.

Informed consent

For this type of study, informed consent is not required.

Consent for publication

For this type of study, consent for publication is not required.

Conflict of interest

The authors declare no competing interests.