In rural Rwanda, in 2008, for the duration of the study you linked after jumping at the first cherry picked example that your Google search found, they were the most frequently made examination.
But even according to that article, out of the 345 examinations only 102 were pregnancy scans, making them a minority of all scans made.
alt Hacker News
In rural Rwanda, in 2008, for the duration of the study you linked after jumping at the first cherry picked example that your Google search found, they were the most frequently made examination.
But even according to that article, out of the 345 examinations only 102 were pregnancy scans, making them a minority of all scans made.