COPENHAGEN—As Christian Eriksen lay unconscious on the field, his pulse slipping away, Denmark team doctor Morten Boesen quickly realized there wasn’t a second to lose. “He was breathing, and I could feel his pulse. But suddenly that changed,” Boesen said Saturday. “And as everyone saw, we started giving him CPR.” The next 10 minutes were among the scariest to ever unfold during a match at soccer’s European Championship. Several medics worked frenetically to give Eriksen chest compressions while his teammates choked away tears and formed a circle around the midfielder to shield the scene from public view. And finally, the eerie silence that had descended around Parken Stadium was replaced with massive cheers. “We managed to get Christian back,” Boesen said. “And he spoke to me before he was taken to the hospital.” Eriksen was awake and in stable condition Saturday night after being taken to a Copenhagen hospital, the …