At this stage in his career van Kampen was approached by Johns Hopkins University in the United States and offered a position but he was still too young to enter the United States so decided to work in Europe before taking up the offer from Johns Hopkins.
Sa hakbang na ito sa kanyang karera van Kampen ay approached by Johns Hopkins University sa Estados Unidos at inaalok ng isang posisyon ngunit siya ay masyadong bata pa upang ipasok ang Pilipinas kaya nagpasya na magtrabaho sa Europa bago taking up ang alok mula sa Johns Hopkins.