disease.

In 1940, the hospital made its first expansion, adding a new wing to the original building. In 1946, the Division of Thoracic Surgery, today the Duke Division of Cardiovascular and Thoracic Surgery, was organized by Josiah Charles Trent. In 1947, the Bell Research Building became the first freestanding building on the hospital campus. In 1954, the Duke Poison Control Center was organized, becoming one of the first two organized in the