In line with the Council of Europe Convention on Human Rights and Biomedicine, the assembly believes that, in the context of assisted reproduction technologies such as pre-implantation genetic diagnosis, prenatal sex selection should be resorted to only to avoid serious hereditary diseases linked with one sex.. In view of these considerations, the assembly calls on member states to monitor the sex ratio at birth and take prompt action to tackle possible imbalances; collect data on sex ratios at birth among specific communities; collect data on sex selection in the context of the use of all techniques of medically assisted procreation; promote research on the causes of prenatal sex selection and its social consequences; encourage national ethics bodies to elaborate on and introduce guidelines for medical staff, discouraging prenatal sex selection by whatever method, unless justified for the prevention of serious sex-linked genetic diseases; consider recommending that public hospitals instruct doctors to withhold information on the sex of the foetus, or at least ensure this information is given in a positive way, irrespective of the sex of the foetus; and introduce legislation with a view to prohibiting sex selection in the context of assisted reproduction technologies and legal abortion, except when it is justified to avoid a serious hereditary disease. This is why we support the motion as a founder member of the European Assembly.