TY - JOUR A1 - Little, P. A1 - Griffin, S. A1 - Kelly, J. A1 - Dickson, N. A1 - Sadler, C. T1 - Effect of educational leaflets and questions on knowledge of contraception in women taking the combined contraceptive pill: Randomised controlled trial Y1 - 1998 DO - 10.1136/bmj.316.7149.1948 VL - 316 IS - 7149 ER -