RT Journal Article SR Electronic T1 Contraceptive advice JF The Journal of the Royal College of General Practitioners JO J R Coll Gen Pract FD British Journal of General Practice SP 352 OP 352 VO 22 IS 118 A1 Corderoy, E. C. YR 1972 UL http://bjgp.org/content/22/118/352.2.abstract AB