RT Journal Article SR Electronic T1 MEDICAL LIBRARY OF THE UNIVERSITY OF PAPUA NEW GUINEA JF The Journal of the Royal College of General Practitioners JO J R Coll Gen Pract FD British Journal of General Practice SP 60 OP 60 VO 29 IS 198 A1 Butler, A. C. YR 1979 UL http://bjgp.org/content/29/198/60.2.abstract AB