Received: 24 March 2021
Accepted: 10 June 2021
First Online: 12 July 2021
: This study was approved by the institutional review board (IRB) of Stanford University. The study has been granted an exemption from requiring informed consent (by the Stanford University IRB). All methods were performed in accordance with the Declaration of Helsinki.
: Not applicable.
: Gabriel Altit obtained a material grant (consisting of NIRS monitors and sensors) by Medtronic via their peer-review grant program for a study for which he is the principal investigator (ExternalRef removed: NCT04106479). The other authors have no conflicts of interest related to the content of this study.