Mansour Diana, Fraser Ian S, Walling Martyn, Glenn Derek, Graesslin Olivier, Egarter Christian, Herbst Josef
Contraception and Sexual Health Service, Newcastle upon Tyne Primary Care Trust, Graingerville Clinic, Westgate Road, Newcastle upon Tyne, UK.
J Fam Plann Reprod Health Care. 2008 Jan;34(1):9-12. doi: 10.1783/147118908783332285.