Cancer pain relief : with a guide to opioid availability /
World Health Organization.
Geneva : World Health Organization,
1996.
"The first edition of this book,...proposed a method for the relief of cancer pain, based on a few relatively inexpensive drugs, including morphine.  Since then, the method has been tested and adopted in many countries around the world, providing pain relief to millions of cancer patients."
Bibliography: p. 59-60.
Cancer pain
Analgesia.