1. The status of permanent pacing of the heart in the United States and Canada;Parsonnet;Ann Cardiol Angéiol,1971
2. Round table: world survey (United States component);Parsonnet,1977
3. Survey of pacemaker practices in the United States—1978;Parsonnet,1979
4. World survey on cardiac pacing;Goldman;PACE,1979
5. The 1981 United States Survey of Cardiac Pacing Practices;Parsonnet;J Am Coll Cardiol,1984