AUTHOR=Sørensen Henrik , Secher Niels H., Rasmussen Peter TITLE=A note on arterial to venous oxygen saturation as reference for NIRS-determined frontal lobe oxygen saturation in healthy humans JOURNAL=Frontiers in Physiology VOLUME=4 YEAR=2014 URL=https://www.frontiersin.org/journals/physiology/articles/10.3389/fphys.2013.00403 DOI=10.3389/fphys.2013.00403 ISSN=1664-042X