<sod >A ÃÂ¢ÃÂÃÂlethal mixÃÂ¢ÃÂÃÂ of incompetence, cover-up and failure to learn from mistakes led to the preventable deaths of 11 babies and one mother at a rural NHS hospital in Cumbria, a long-awaited report has said.< eod>< sod > The NHS is to launch a review of maternity services in England in the wake of a damning report that said a ÃÂ¢ÃÂÃÂlethal mixÃÂ¢ÃÂÃÂ of incompetence and cover-up led to the preventable deaths of 11 babies and one mother at a rural hospital in Cumbria.< eod>