1. National Survey of Exercise Stress Testing Facilities
Robert J. Stuart, M.D., Myrvin H. Ellestad, M.D. 
CHEST 
Volume 77, Issue 1, Pages (January 1980)
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Copyright © 1980 The American College of Chest Physicians Terms and Conditions

2. Figure 1 Questionnaire on stress testing.
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Copyright © 1980 The American College of Chest Physicians Terms and Conditions

3. Figure 2 Type of exercise testing performed by region.
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Copyright © 1980 The American College of Chest Physicians Terms and Conditions

4. Figure 3 Number of centers by the amount of testing per month.
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Copyright © 1980 The American College of Chest Physicians Terms and Conditions

5. Figure 4
Distribution of exercise testing centers by type of practice (1,375 centers reporting).
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Copyright © 1980 The American College of Chest Physicians Terms and Conditions

6. Figure 5
Incidence of infarction, arrhythmia and death during exercise testing. Total of all three complications per 10,000 tests.
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Copyright © 1980 The American College of Chest Physicians Terms and Conditions