WILLMAR—Once upon a time, DuWayne Underthun and his wife, Betty, would have been making many snowy trips from their rural Willmar home to the CentraCare Heart and Vascular Center in St. Cloud for his congestive heart failure. Instead, he now receives most of his care much closer to home through a newly launched heart failure telemedicine program at Rice Memorial Hospital. An appointment last week, the day after a snowstorm pummeled the region and brought most travel to a standstill, reinforced