HC Deb 27 July 1964 vol 699 c188W
73. Sir B. Stross

asked the Minister of Health whether he is aware that mass X-rays at the pitheads in North Staffordshire has shown that there has been a large fall in the number of cases of progressive mass fibrosis as well as a great diminution in the attack rate of pulmonary tuberculosis; and to what extent his Department accept these figures as evidence of the relationship between tuberculosis and massive fibrosis.

Mr. Braine

Yes, but I am advised that this cannot be taken as evidence of a relationship between the two diseases.