As the family physician Dr. Nuboer played a significant role in Carel’s dying moments. When news of Carel’s accident reached the Netherlands, Carel’s mother Gonda immediately contacted the professor. Upon her request the neurologist accompanied her to the Koblenz hospital where Carel was transported to. Nuboer’s examination led to Carel’s transfer by helicopter to Cologne's university hospital but it was too late. Carel died on Sunday evening, August 2, 1964.