Instructions: Given a text, write a compressed version of it in a single sentence.
Input: If the wage premium measure is valid, then seven countries have a wage premium alone which exceeds the value of scale in the delivery function; Australia, Austria, France, Japan, Luxembourg, Switzerland and the United States.
Output:
If the wage premium measure is valid, Australia, Austria, France, Japan, Luxembourg, Switzerland and the United States alone exceeds the value of scale.