(Oregon City, OR)  --  A couple of Oregon City parents who belong to a faith group that doesn't believe in medical care are pleading not guilty in their child's death.  Travis and Sarah Mitchell are being held without bail on murder charges after one of their newborn twin girls died back in March because of breathing problems.  The Mitchells belong to the Followers of Christ Church, which looks to prayer and anointment with oil to heal.  However, the other baby girl was eventually taken to a hospital.