1. Chief Justice John Roberts in Majority Opinion, National Federation of Independent Business v Sebelius, US Supreme Court (2012).
2. The road ahead;Allen;Clin Gastroenterol Hepatol,2012
3. When patients call, will physicians respond?;Zinberg;JAMA,2011
4. The impact of improved colorectal cancer screening rates on adequacy of future supply of gastroenterologists,2009
5. Report to Congress: Medicare ambulatory surgical center value-based purchasing implementation plan,2011