RT Journal Article SR Electronic T1 Changing Population of Mental Hospitals JF British Journal of Preventive & Social Medicine JO Br J Prev Soc Med FD BMJ Publishing Group Ltd SP 187 OP 190 DO 10.1136/jech.9.4.187 VO 9 IS 4 A1 G. M. Carstairs A1 W. L. Tonge A1 N. O'Connor A1 L. E. D. Barber YR 1955 UL http://jech.bmj.com/content/9/4/187.abstract AB