Degree in Gymnast, Thomas Kempis College, Arnhem, 1978. Doctor of Medicine, University Nijmegen, 1983. Doctor of Philosophy in Biomedical Science, University Leuven, 1997.
Chest physician University Hospital Nijmegen, 1993. Consultant chest physician University Hospital Gasthuisberg, Leuven, Belgium, 1993—1999. Consultant pulmonary oncology University Hospital Antwerp, Belgium, 1997—1999.
Senior consultant pulmonary oncology Erasmus MC, Rotterdam, Netherlands, 1999—2007, associate professor pulmonary oncology Netherlands, since 2008. Chairman comprehensive cancer center IKR, Rotterdam, Netherlands, since 2000. Chairman Rotterdam Oncologic Study Group Erasmus MC, since 2002.
Member of ESMO, IASLC, NVALT, European Organisation for Research and Treatment of Cancer, AIOT.
Son of Jan van Klaveren and Phemey Kloosterman. Life partner Roxane Rakic. Children: Harold, Edward.