Electronic medical records, or EMRs, are quickly becoming a reality for doctors and hospitals in South Florida and beyond. If EMRs work, they'll be high-tech marvels -- letting patients access their own medical records on their home computers, helping doctors coordinate tests with each other to avoid duplication, giving medical researchers access to millions of medical records. Nearly every major South Florida hospital and many doctors are joining a push by the Obama administration to spend $19.2 billion in federal stimulus money to help create a national EMR system by 2014.