Blood group incompatibility is the commonest and most significant clinical cause of isoimmunization in pregnancy.
Zygosity was assessed by a series of questions about sibling similarity and supplemented with limited blood group data obtained from military records.
The high early mortality of those affected made it difficult to blood group both twins before death.
There is here a uniquely complete compilation of information providing control blood group frequencies for blood group and diseaserelationship investigations.
By 1950, the essential blood group anthropology of aboriginal populations throughout the world had been established.
Zygosity was assigned using responses to a series of questions about similarity of physical appearance, supplemented with blood group typing information.
While the blood group data extended over the period 1944-1946, the obstetric details were limited to 1946.
The probability of a correlation between blood group frequencies and phonetic peculiarities is pointed out for a number of old world regions.
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