RT Journal Article SR Electronic T1 SPECIALIZATION WITHIN GENERAL PRACTICE JF The Journal of the Royal College of General Practitioners JO J R Coll Gen Pract FD British Journal of General Practice SP 754 OP 754 VO 30 IS 221 A1 Ian Gregg YR 1980 UL http://bjgp.org/content/30/221/754.2.abstract AB