American Journal of Respiratory and Critical Care Medicine (2011) - Comments
pubmed: 20833820  doi: 10.1164/rccm.201006-1004oc  issn: 1535-4970  issn: 1073-449x 

---

J. Randall Curtis, Elizabeth L. Nielsen, Patsy D. Treece, Lois Downey, Danae Dotolo, Sarah E. Shannon, Anthony L. Back, Gordon D. Rubenfeld, Ruth A. Engelberg