Cicely Marston, Azeem Majeed, Howard Meltzer
Marston C, Majeed A, Meltzer H.
Impact on contraceptive practice of making emergency hormonal contraception available over the counter in Great Britain: repeated cross sectional surveys
BMJ 2005; :bmj;bmj.38519.440266.8Fv1
doi:10.1136/bmj.38519.440266.8F