HC Deb 21 April 1969 vol 782 c13W
69. Mr. Pavitt

asked the Secretary of State for Social Services what progress has been made in transplants of bone as a cure for deafness; if the clinical trials are yet complete; and if he will make a statement.

Mr. Crossman

Clinical and laboratory trials which are in progress will not be complete until problems associated with possible rejection of the transplanted bone have been fully explored.