RT Journal Article SR Electronic T1 General practitioner obstetrics: does risk prediction work? JF The Journal of the Royal College of General Practitioners JO J R Coll Gen Pract FD British Journal of General Practice SP 521 OP 521 VO 38 IS 316 A1 Marjorie Tew YR 1988 UL http://bjgp.org/content/38/316/521.2.abstract AB