Associate Editor, J. Amer. Statist. Assoc., 1980--1981
Associate Editor, SIAM Journal of Scientific and Statistical Computing, 1980--1982
Panel on Skin Cancer Statistics, Committee on National Statistics, National Academy of Science, 1974--1979.
Institute of Mathematical Statistics Committee on Special Papers, 1974--1981 (Chairman, 1976--77, 1980--81)
Program Chairman, 1978 Annual Meeting of the Institute of Mathematical Statistics, San Diego
Consultancy for the Science Advisory Board of the U. S.
Environmental Protection Agency:
Panel to Review the "Community Health and Environmental
Surveillance System", November 1974--March 1975
Health Effects Research Review Group, July 1978--January 1979
American Statistical Association Committee on Nuclear Regulatory Research, June 1980--December 1982
Biopharmaceutical Section Executive Committee, American Statistical Association, January 1984--1987.
Subcommittee on Regional Meetings, American Statistical Association, November 1984--1986.
NASA/WMO Ozone trends panel, January 1987-1990. (Chairman, Statistical Issues Working Group, and Lead author, Appendix on Statistical Issues).
IPCC Panel on Section 8, WG1, January 1990--December 1990.
NASA CFC Concentration, Trends, and Lifetimes Panel, February 1991--present. (Lead author, Chapter 3 of report).
NRC Committee to Review the Structure and Performance of the Health Effects Institute, October 1991--December 1992.
IPCC Panel on Section 8, WG1, August 1994--November 1995.