%0 Journal Article %T A Narrowing Diagnosis: A Rare Cause of Adult Croup and Literature Review %A Emily Kitchin %A Jayshil J. Patel %A Kurt Pfeifer %J Archive of "Case Reports in Critical Care". %D 2017 %R 10.1155/2017/9870762 %U https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5259656/