" 

 ==SILENT== 
 I question whether ""SILENT"" should be included in this article. The current citation appears to be the only extensive treatment of the concept in the literature, and it appeared eight years ago in a low impact factor journal. There have been a few small primary studies and case reports, but not enough to convince me that ""SILENT"" (moniker or condition) has received the kind of acceptance or review that would justify inclusion in the article.   "