RT Journal Article SR Electronic T1 DR D. SCOTT NAPIER JF The Journal of the Royal College of General Practitioners JO J R Coll Gen Pract FD British Journal of General Practice SP 630 OP 630 VO 27 IS 183 A1 Gordon L. McCulloch YR 1977 UL http://bjgp.org/content/27/183/630.3.abstract AB