How many critical care units are there in the world?
In 2013, every state in the U.S. had 5-10 critical care units with 10-15 beds in each critical care unit.

How many critical care units are there in the world?
In 2013, every state in the North America, Asia, Africa, Australia, Latin had 5-10 critical care units with 10-15 beds in each critical care unit.