RT Journal Article SR Electronic T1 Changing patterns in diseases. JF The Journal of the Royal College of General Practitioners JO J R Coll Gen Pract FD British Journal of General Practice SP 860 OP 865 VO 26 IS 172 A1 Sreenivasan, B. R. YR 1976 UL http://bjgp.org/content/26/172/860.abstract AB