Thank you for visiting nature.com. You are using a browser version with limited support for CSS. To obtain
the best experience, we recommend you use a more up to date browser (or turn off compatibility mode in
Internet Explorer). In the meantime, to ensure continued support, we are displaying the site without styles
and JavaScript.
Obstructive upper-airway events in young infants are more frequent when they are supine than when they sleep on their side. See article by Kukkola and Kirjavainen on page 1361.