11.   He died of cardiac failure triggered by stress from the disease in his luxury home in Guadalajara.

12.   It is presumed the pure caffeine causes the frogs to go into cardiac failure.

13.   The caffeine spray causes cardiac failure.

14.   The drug is also under clinical testing as a cardiac failure treatment in Japan, Europe and the United States.

15.   The caffeine spray would presumably cause the frogs to go into cardiac failure.

16.   She underwent a life-saving heart operation Friday following cardiac failure.