OGDEN -- Enjoy the recent balmy weather? Sorry, it's time for a change. Snow and colder temperatures are expected to settle in this week. Along with snow, ice and cold, also comes amputated fingers, frostbite, heart attacks and sports injuries.According to the Center on Injury Research and Policy at Nationwide Children's Hospital in Columbus, Ohio, sledding injuries account for approximately 20,820 injuries each year in the United States. Lead author Lara McKenzie said she thinks the figures are higher, because many sledding injuries are often not seen in the emergency room.