AUTHOR=Farré Ramon , Montserrat Josep M. , Gozal David , Almendros Isaac , Navajas Daniel TITLE=Intermittent Hypoxia Severity in Animal Models of Sleep Apnea JOURNAL=Frontiers in Physiology VOLUME=9 YEAR=2018 URL=https://www.frontiersin.org/journals/physiology/articles/10.3389/fphys.2018.01556 DOI=10.3389/fphys.2018.01556 ISSN=1664-042X