KANSAS CITY, Mo. — More than a dozen people were hospitalized Saturday after the Chiefs game at Arrowhead Stadium plagued by record-breaking cold. The Kansas City Fire Department received nearly 70 calls for service at the stadium, with about half related to signs of hypothermia as temperatures dropped to minus 6 with a wind chill of minus 27, said Michael Hopkins, a spokesman for the department. Of those calls, 15 people were hospitalized, including seven for hypothermia and three for frostbite. The other five were hospitalized for injuries unrelated to the cold, Hopkins said. Other callers w…