Frank J. Sorvillo* , Lawrence Portigal†, Christopher. DeGiorgio‡, Lisa Smith*, Stephen H. Waterman§, George W. Berlin*, and Lawrence R. Ash*
Author affiliations: *UCLA School of Public Health, Los Angeles, California, USA; †Office of Vital Records, State of California, Sacramento, California, USA; ‡UCLA School of Medicine, Los Angeles, California, USA; §Centers for Disease Control and Prevention, Atlanta, Georgia, USA
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