An official website of the United States government
The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before
sharing sensitive information, make sure you’re on a federal
government site.
The site is secure.
The https:// ensures that you are connecting to the
official website and that any information you provide is encrypted
and transmitted securely.
Sinha P, Calfee CS, Beitler JR, Soni N, Ho K, Matthay MA, Kallet RH.Sinha P, et al. Among authors: calfee cs.Am J Respir Crit Care Med. 2019 Feb 1;199(3):333-341. doi: 10.1164/rccm.201804-0692OC.Am J Respir Crit Care Med. 2019.PMID: 30211618Free PMC article.