RT Journal Article SR Electronic T1 HOW MANY PATIENTS? JF The Journal of the Royal College of General Practitioners JO J R Coll Gen Pract FD British Journal of General Practice SP 285 OP 285 VO 23 IS 129 A1 C. H. Maycock YR 1973 UL http://bjgp.org/content/23/129/285.2.abstract AB