RT Journal Article SR Electronic T1 GENERAL PRACTITIONERS AND OBSTETRICS JF The Journal of the Royal College of General Practitioners JO J R Coll Gen Pract FD British Journal of General Practice SP 495 OP 495 VO 24 IS 144 A1 Greville Hoyle YR 1974 UL http://bjgp.org/content/24/144/495.2.abstract AB