参考文献
急救医学

        1.Reardon RF, Martel ML. First trimester pregnancy. In Ma OJ,Mateer JR (eds.), Emergency Ultrasound. New York, NY: McGraw-Hill; 2003: 239-76.2.Moore C,Promes SB. Ultrasound in pregnancy. Emerg Med Clin North Am 2004; 22: 697-722.3.Lyons E, Levi C,Dashefsk    （共 3707 字）     [阅读本文] >>