Oxygen Saturation: A Guide to Laboratory Assessment. Clinical Laboratory News [online]. February 2006 [cit. 2014-12-08]. Dostupné v archivu pořízeném z originálu dne 2014-12-14.
web.archive.org
Oxygen Saturation: A Guide to Laboratory Assessment. Clinical Laboratory News [online]. February 2006 [cit. 2014-12-08]. Dostupné v archivu pořízeném z originálu dne 2014-12-14.