Citation Hunt

The Wikipedia snippet below is not backed by a reliable source. Can you find one?

Click I got this! to go to Wikipedia and fix the snippet, or Next! to see another one. Good luck!

In page Guatemala syphilis experiments:

"

Thomas Parran was the sixth Surgeon General of the United States, who served from 1936 to 1948. Parran's profound interest in STD research can be seen when he testified before Congress in 1938 for expanded funding for public health prevention efforts and scientific research in the STD field.[citation needed]