RT Journal Article SR Electronic T1 Bedside Diagnosis JF The Journal of the Royal College of General Practitioners JO J R Coll Gen Pract FD British Journal of General Practice SP 840 OP 840 VO 25 IS 160 A1 David G. Illingworth YR 1975 UL http://bjgp.org/content/25/160/840.2.abstract AB