A. Keith

The benefits of switching smoking cessation drugs to over-the-counter status.

T. Hu, H. Sung, T. Keeler, 2002, Health economics.

Workplace performance effects from chronic depression and its treatment.

A. Rush, M. Keller, J. Russell, 1998, Journal of health economics.

The economics of Viagra.

À. Keith, A. Keith, 2000, Health affairs.