5Munim S, Nadeem S, Khuwaja NA. The accuracy of ultrasound in the diagnosis of congenital abnormalities [ J ]. J Pak Med Assoc, 2006, 56(1) :16 -18.
6Aisling JC, Sara AT. Heart disease in pregnancy [ J ]. Medicine, 2006,34(8) : 307 -311.
7Tornos P. Valvular heart disease in women [ J ]. Rev Esp Cardiol, 2006,59(8) :831-836.
8Ray JG, Vermeulen M J, Koren G,et al. Taking ACE inhibitors during early pregnancy: is it safe? [J]. Can Faro Physician,2007,53 (9) :1439 - 1440.
9Khamooshi A J, Kashfi F, Hoseini S,et al. Antieoagulation for prosthetic heart valves in pregnancy. Is there an answer? [ J]. Asian Cardiovasc Thorae Ann ,2007,15 (6) :493 - 496.
10Sfivastava AR, Modi P, Sahi S, et al. Antieoagulation for pregnant patients with mechanical heart valves [ J ]. Ann Card Anaesth, 2007,10(2) :95 - 107.
