Los Angeles County (Calif.). Public Health
World Health Organization
Leslie T. Foster
Deborah Wallace
Serge Castonguay
Unknown Author
Richard G. Brooks
British Columbia. Division of Vital Statistics
Canadian Institute for Health Information
Vicente Navarro
Ge Lin
Health Council of Canada
Canada. Health Canada
Organisation mondiale de la sante .
James S. Larson
N. T. Jazairi
C. Arden Miller
Organisation mondiale de la santé