REFERENCES

1.  Garson A, Bricker JT, McNamara. The science and practice of pediatric cardiology. Philadephia: Lea and Febiger, 1990: 1954.
2.  Myung KP, Warren GG. How to read pediatric ECGs. St Louis: Mosby Year Book, 1992:116-117.
3.  Crawford M. Current diagnosis and treatment in cardiology. Connecticut: Appleton and Lange, 1992:217.