Todd M. Frazier, Robert E. L. Nesbitt, Jr., Mark P. Pentecost, Jr., Accuracy of the Reported Causes of Fetal and Neonatal Deaths, Public Health Reports (1896-1970), Vol. 72, No. 10 (Oct., 1957), pp. 933-938
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Frazier et al. (1957) studied this question.