W. Engel

The Treatment of Patients with Asthma by Specialists and Generalists

R. Fletcher, D. Freund, J. Stein, 1989, Medical care.

Antibiotic therapy and chronic obstructive pulmonary disease.

W. Engel, 1987, Annals of internal medicine.

The Kansas City Asthma Care Project: specialty differences in the cost of treating asthma.

D. Freund, R. Hurley, A. Woomert, 1988, Annals of allergy.

Specialty differences in the treatment of asthma.

D. Freund, D A Freund, J Stein, 1989, The Journal of allergy and clinical immunology.