E. BELTRAN, Centers for Disease Control and Prevention, Atlanta, GA, USA, and L. BARKER, U.S. Centers for Disease Control and Prevention, Atlanta, GA, USAObjective: To describe the prevalence of enamel fluorosis among adolescents aged 12 to 15 and 16 to 19 years using data from the three most recent cycles of the National Health and Nutrition Examination Surveys (NHANES) in the U.S: 1999-2000, 2001-2002, and 2003-2004.
Methods: NHANES is an ongoing survey of representative samples of
In the present study, forty villages in Mehsana district and thirteen villages in Banaskantha district were surveyed and the effects of waterborne fluoride were investigated. Parallel studies were also conducted in Ahmedabad city (non-fluoride endemic area) population which was considered as control to compare the changes occurring due to consumption of high water borne fluoride in endemic population. For each individual, a detailed proforma sheet for health and water quality survey was filled u
NATIONAL ACADEMY OF SCIENCES
INSTITUTE OF MEDICINE
2101 Constitution Avenue, Washington, D.C. 20418
November 20, 1998
Albert W. Burgstahler, Ph.D. and others
Professor of Chemistry
The University of Kansas
4035 Malott Hall
Lawrence, Kansas 66045
Dear Dr. Burgstahler:
We apologize for the delay in responding to your letters of October 15, 1997 and February 4, 1998, to each of us individually. At the time we had a very large number of inquiries and comments, and while letters were pr
