Nowadays, epidemiological data concerning AFE are expressed in terms of incidence rate and mortality rate, which accounts for the number of morbidity cases or deaths of mothers per 100,000 live births or deliveries, respectively. The reported incidence ranged from 1.9 cases per 100,000 maternities in the United Kingdom, through the Netherlands, the USA and Canada to 6.1 per 100,000 maternities in Australia [7].