1. Greenberg A Kowey PR Bargmann E Wolfe SM Permanent Pacemakers in Maryland Report by Health Research Group, 2000 P Street, NW, Washington, D.C. 20036 July 1982
2. Too Many Pacemakers;Seltzer;N Engl J Med,1981
3. Guidelines for Permanent Cardiac Pacemaker Implantation;Joint American College of Cardiology/American Heart Association Task Force on Assessment of Cardiovascular Procedures (Subcommittee on Pacemaker Implantation):;JACG,May 1984
4. Pacing in Perspective: Concepts and Controversies;Parsonnet;Circulation,1986
5. Problems in Health Data Analysis: The Maryland Permanent Pacemaker Experience in 1979-1980;Scherlis;Am J Cardiol,1983