Prof. Alex Stein at Brooklyn Law School maintains a substantive blog/journal on development in medical malpractice law.
Additional discussions of medical error and measuring and improving quality can be found at Sheila Leatherman and Douglas McCarthy, Quality of Health Care in the United States: A Chartbook (2002).
Here is a good practical discussion of how juries think, and therefore how to communicate with them in the courtroom: Thomas M. O'Toole, Bruce A. Boyd and Theodore O. Prosise, The anatomy of a medical malpractice verdict, 70 Mont. L. Rev. 57-91 (2009).