C. D. de Bruijne

Asthma severity and susceptibility to air pollution.

B. Brunekreef, P. Sterk, L. van Bree, 1998, The European respiratory journal.

Effects of photochemical air pollution and allergen exposure on upper respiratory tract inflammation in asthmatics.

A. Zwinderman, L. van Bree, P. Steerenberg, 1997, American journal of respiratory and critical care medicine.