(Bloomberg) Doctors across the US are stretching to keep their practices afloat as a debilitating cyberattack on a once little-known company at the center of the health-care system continues to cause havoc.Most Read from BloombergStock Traders Bracing for Worst Shrug Off Hot CPI: Markets WrapEx-Wall Street Banker Takes On AOC in New York Democratic PrimaryChina Has Never Canceled This Many Shipments of US WheatUnited Tells Boeing to Stop Making Its Long Delayed Max 10sTrump Wins Republican No