Cedric F. Garland, DrPH,
Frank C. Garland, PhD,
Edward D. Gorham, PhD, MPH,
Martin Lipkin, MD,
Harold Newmark, ScD,
Sharif B. Mohr, MPH and
Michael F. Holick, MD, PhD
Cedric F. Garland, Frank C. Garland, and Edward D. Gorham are with the Department of Family and Preventive Medicine, University of California, San Diego. Cedric F. Garland, Frank C. Garland, Edward D. Gorham, and Sharif B. Mohr are with the Naval Health Research Center, San Diego, Calif. Martin Lipkin is with the Strang Cancer Prevention Center, New York, NY. Harold Newmark is with the Laboratory for Cancer Research, Department of Chemical Biology, Rutgers University, Piscataway, NJ. Michael F. Holick is with the Vitamin D Laboratory, Section of Endocrinology, Nutrition and Diabetes, Department of Medicine, Boston University School of Medicine, Boston, Mass.
FIGURE 1—Age-adjusted colon cancer mortality rates, by county area, and contours of annual mean daily solar irradiance in Langleys (calories/cm2), United States, 19701994.
FIGURE 2—Age-adjusted breast cancer mortality rates, by county area, and contours of annual mean daily solar irradiance in Langleys (calories/cm2), United States, 19701994.