How is this relevant? The article includes a discussion of "McNamara and Kissinger’s capacity to convey confidence about the rightness of America’s Vietnam policies are major reasons for the tragic deaths of nearly 60,000 Americans and approximately 2 to 3 million Vietnamese."

This took place before the 26th amendment, in 1971.

The new voting rights for 18-20 year olds also does not affect Spitzer's role in DSM-3.

Biederman got his MD in Argentina in 1971, so he too wasn't affected by the change in the US voting age.