The Maryland Court of Special Appeals overturned a multimillion-dollar judgment against Johns Hopkins Hospital in a case that accused its doctors of causing severe and irreversible brain damage to a baby born at the hospital. The judges ordered the case sent back to a lower court for retrial. They ruled that Hopkins should have been allowed to give more testimony about the role a midwife might have played in the baby's injuries. Attorneys for the baby's family said Wednesday that they will appeal the decision to the Court of Appeals, the state's highest court. The case stems from February 2011, when Rebecca Fielding and Enso Martinez sued Hopkins, alleging that their son, Enzo, was deprived of oxygen to the brain the previous March as the mother waited for a cesarean section at the hospital.