Doctor, Leiden University Medical Center, Netherlands, 1984. Doctor of Philosophy, Leiden University Medical Center, Netherlands, 1989.
Head, department pulmonology Haga Teaching Hospital, Hague, Netherlands, since 1994, director Cystic Fibrosis Center. Founding editor Journal Cystic Fibrosis.
Member of European Cystic Fibrosis Society, European Respiratory Society.
Married Karin de Jong, September 5, 1986. Children: Thim, Fleur.