Doctors and nurses may want to think twoce about letting a mother see and hold her stillborn infant.  A new study says the mother could suffer more psychological trauma if she does. This contradicts years of medical advice to bereaved parents.  The study tracked 65 women in Britain who were pregnant for a second time after a stillbirth. Thirty-nine percent who had seen and held their babies went on to suffer depression. That compares to 21 percent who had only seen the infant. Just six percent of those who had neither seen nor held their babies were depressed. The research also found that next-born children are more likely to have psychological problems if their mothers held or saw their stillborn sibling. Findings are published in the medical journal "The Lancet."