Each company is believed to be in violation of the Federal Food, Drug and Cosmetic Act. They have 15 working days to respond. 

"These findings might imply that not all AFib is worth screening for, and not all screen-detected AFib merits anticoagulation," researchers wrote. 

Researchers tracked data from more than 33,000 adults under the age of 45.

The system preserves hearts that can’t be procured or transplanted right away due to a limited availability of storage space.

Specialists at the University of Michigan hope their findings can help patients receive an effective treatment early on in their infection. 

Inpatient care for PCI is trending in the right direction, researchers explained, but there is still room for improvement. 

The study also provides new evidence that patients can gain a better understanding of their blood pressure when they monitor it regularly at home. 

Surgical mitral valve repair, however, was also associated with multiple benefits.

Researchers aimed to gain a better understanding of a controversial topic.