Documents:
Dental caries prevalence of twelve year olds in Puerto Rico. Community Dental Health (2003) 20, 171-176
Regional Office for the Americas of the World Health Organization 525 Twenty-third Street, N.W., Washington, D.C. 20037, United States of America Tel.: +1 (202) 974-3000 Fax: +1 (202) 974-3663
