1. Invasive Hemodynamic Monitoring in the United Kingdom
Mervyn Singer, M.B., M.R.C.P., E. David Bennett, M.B., F.R.C.P. 
CHEST 
Volume 95, Issue 3, Pages (March 1989)
DOI: /chest
Copyright © 1989 The American College of Chest Physicians Terms and Conditions

2. Figure 1 Monthly use in ICUs and combined ICU/CCUs.
CHEST  , DOI: ( /chest )
Copyright © 1989 The American College of Chest Physicians Terms and Conditions

3. Figure 2
Monthly use in CCUs in hospitals with and without a separate ICU.
CHEST  , DOI: ( /chest )
Copyright © 1989 The American College of Chest Physicians Terms and Conditions

4. Figure 3 Monthly use on cardiothoracic units.
CHEST  , DOI: ( /chest )
Copyright © 1989 The American College of Chest Physicians Terms and Conditions