Comment on

• Specialty distribution of U.S. physicians--the invisible driver of health care costs.

  Schroeder SA, Sandy LG. Schroeder SA, et al. N Engl J Med. 1993 Apr 1;328(13):961-3. doi: 10.1056/NEJM199304013281312. N Engl J Med. 1993. PMID: 8446146 No abstract available.