UpToDate in Pulmonary, Critical Care, and Sleep Medicine
UpToDate in Pulmonary, Critical Care, and Sleep Medicine is an official educational program of the American Thoracic Society.
All of our topics are written exclusively for UpToDate by physicians for
clinicians. Thousands of your colleagues serve as authors,
editors and peer reviewers. Our content
is evidence-based, comprehensive, and fully referenced and is subject to an extensive peer
review process to ensure that the information and recommendations are accurate and reliable.