TY - JOUR T1 - Oral contraceptives JF - The Journal of the Royal College of General Practitioners JO - J R Coll Gen Pract SP - 676 LP - 677 VL - 23 IS - 134 AU - A. J. Laidlaw Y1 - 1973/09/01 UR - http://bjgp.org/content/23/134/676.abstract N2 - 300 Multiple ChoicesThis is a pdf-only article and there is no markup to show you.full-text.pdf ER -