1. WebMD home page. Available at http://www.webmd.com. Accessed October 21 2002.
2. MedicineNet.com home page. Available at http://www.medicinenet.com. Accessed October 21 2002.
3. Internet Medical Education Inc. Atrial fibrillation. Available at http://www.med-edu.com/patient/arrhythmia/atrial-fib.html#conversion. Accessed October 21 2002.
4. A-Fib.com Inc. Atrial fibrillation: resources for patients. Available at http://www.a-fib.com. Accessed October 21 2002.
5. Bristol-Myers Squibb Company. Coumadin. Available at http://www.coumadin.com. Accessed October 21 2002.