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 379 OP 379 VO 27 IS 179 A1 Len Ratoff A1 Joan Munro A1 Valerie F. Hillier YR 1977 UL http://bjgp.org/content/27/179/379.1.abstract AB