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Vital and Health Statistics. Health and Demographic Characteristics of Twin Births: United States, 1988.

机译:生命和健康统计。双胞胎的健康和人口特征:美国,1988年。

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National trends in twin birth incidence by race of child are analyzed for the period 1950-88. Also reviewed are maternal and infant health and demographic characteristics associated with twin delivery for the year 1988.

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