求英文文献两篇, thanks

Authors:
Tsevat, J.
Title:
Impact and cost-effectiveness of smoking interventions. [Review] [35 refs]
Source:
American Journal of Medicine. 93(1A):43S-47S, 1992 Jul 15.
Abbreviated Source:
Am J Med. 93(1A):43S-47S, 1992 Jul 15.
NLM Journal Name:
The American journal of medicine
Institution:
Department of Medicine, Beth Israel Hospital, Harvard Medical School, Boston, Massachusetts.

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Pharmacoeconomics. 1997 Jun;11(6):538-49.
Cost effectiveness of smoking-cessation therapies. Interpretation of the evidence-and implications for coverage.
Warner KE.
Department of Health Management and Policy, School of Public Health, University of Michigan, USA. kwarner@umich.edu