PT - JOURNAL ARTICLE AU - M. I. Cookson TI - OBSTETRICS, CONTRACEPTION AND GYNAECOLOGY DP - 1977 Jan 01 TA - The Journal of the Royal College of General Practitioners PG - 60--60 VI - 27 IP - 174 4099 - http://bjgp.org/content/27/174/60.1.short 4100 - http://bjgp.org/content/27/174/60.1.full SO - J R Coll Gen Pract1977 Jan 01; 27