One got a placebo, one got 20 international units of aerosolized insulin a day, and the third got 40 international units a day.
The company has sold seven of its international units and ventures over the last 10 months.
He said Aetna hoped to sell some international units for $500 million to $1.5 billion.
Half took 600 international units of vitamin E on alternate days; the rest took a placebo.
"We believe that we can meet this target without access to international units.
Will that stop people from gobbling thousands of international units a day?
The heads of three of the company's international units have left in the last month.
For international units of physical quantities, such as mass, length, etc., see International System of Units.
The luminous intensity of a light, or its candlepower, is expressed in international units called candelas.
The committee, though, said people need only 600 international units a day.
Business is keen for us to leave international units on the table and we will do that but we believe we can achieve this without needing to access international units," Bishop said.
