Estimates of Present and Future Asthma Emergency Department Visits Associated with Exposure to Oak, Birch, and Grass Pollen in the United States
James E. Neumann, Industrial Economics, Inc., Cambridge, MA; and S. C. Anenberg, K. R. Weinberger, M. Amend, S. Gulati, A. Crimmins, H. Roman, N. Fann, and P. L. Kinney