1. Management of Postoperative Pain: Review of Current Techniques and Methods 
LON J. LUTZ, M.D., TIM J. LAMER, M.D. 
Mayo Clinic Proceedings 
Volume 65, Issue 4, Pages (April 1990)
DOI: /S (12)
Copyright © 1990 Mayo Foundation for Medical Education and Research Terms and Conditions

2. Fig. 1
Roentgenogram, illustrating distention of axillary sheath with contrast material injected through an axillary catheter.
Mayo Clinic Proceedings  , DOI: ( /S (12) )
Copyright © 1990 Mayo Foundation for Medical Education and Research Terms and Conditions

3. Fig. 2
Relationship among dose interval, analgesic drug concentration, and clinical effects in a comparison of patient-controlled analgesia (PCA) system and conventional intramuscular (i.m.) therapy.
(From White.68 By permission of W. B. Saunders Company.)
Mayo Clinic Proceedings  , DOI: ( /S (12) )
Copyright © 1990 Mayo Foundation for Medical Education and Research Terms and Conditions