ST. PAUL — Minnesota health care leaders gathered Thursday at the Capitol to demand that Gov. Tim Walz call a special session to pass gun control legislation over a month after the Annunciation Catholic Church shooting. ADVERTISEMENT“This is no longer a friendly request from their local doctors,” said Dr. Lisa Mattson, president of the Minnesota Medical Association. Walz said Thursday at an unrelated press conference that he’s “still working it,” but didn’t confirm whether he would call a special session. “This is a public health issue, and we know how to address public health issues.