Sumer's Radiology Site is cited by Joanna Lynn Karpinski, MLIS (firstname.lastname@example.org) is Associate Fellow, National Library of Medicine (NLM), in Medical Reference Services Quarterly, Vol. 27(1), Spring 2008 Available online at http://mrsq.haworthpress.com
According to the article, titled Disconnected in a Connected World: Knowledge and Understanding of Web 2.0 Tools at the University of Pennsylvania Medical Center
"Radiology, a medical field that is highly dependent on image-based examples for teaching, is experiencing a growth of blogs. Sumer Sethi, M.D., uses his blog to post interesting cases from his routine practice and abstracts related to his day-to-day work. The site is visited by more than 30,000 visitors each year and is a focal point for queries from his students and patients. The blog features not only a means of commenting on Dr. Sethi’s posts, but also a small section called a “shoutbox,” where users can post messages or questions on any topic for Dr. Sethi and other readers to see. Dr. Sethi can respond using the shoutbox."