Methods: retrospective analysis of 31 placental abruptions and the coincidence ratio with clinical diagnosis.
方法：回顾性分析31例胎盘早剥的声像图表现及与产后临床诊断的符合率。
2
Use of folic acid with or without multivitamin supplements before or during pregnancy was reported by 36.4% of those who had abruptions and 44.4% of those who did not.