CRC/C/SAU/CO/3-4 (b) Repeal all provisions that discriminate against women and have a negative impact on their children, such as those that authorize polygamy and unilateral divorce; (c) Review its legislation relating to the custody of the child with a view to ensuring that all decisions taken are based on the principle of the best interests of the child, that children are not removed from the custody of their mothers after a certain age and that fathers who are unfit to keep their children are not given custody; (d) For migrant domestic workers, abolish the exit visa requirement, which is at the discretion of the employer, as well as the sponsorship system, and ensure the right to a family life for these workers by properly regulating their activity under the labour law and ensure also their right to freely leave their employer, visit and reunite with their children. Children deprived of a family environment 33. Drawing the State party’s attention to the Guidelines for the Alternative Care of Children (see General Assembly resolution 64/142, annex), the Committee recommends that the State party take measures to accelerate the transition from institutionalization to family-based care for children and, to this aim, strengthen efforts towards the establishment of a well-regulated system of foster care for children deprived of their families. The State party should also: (a) Ensure that children are not moved from one institution to another while they grow up, as this undermines their need for stability and may result in them being separated from their siblings; (b) Provide unmarried mothers with the support necessary to enable them to take care of their children and conduct awareness-raising campaigns to eliminate the stigma attached to children born out of wedlock; (c) Ensure that all girls reaching the age of 12 years do not remain in social education homes, where they can only acquire life skills while boys have access to secondary education opportunities and can participate in social, cultural and sporting activities; (d) Ensure adequate safeguards and clear criteria, based on the needs as well as the best interests of the child, for determining whether a child should be placed in alternative care and also ensure periodic review of the placement of children in foster care and institutions and monitor the quality of care in such institutions, including by providing accessible channels for reporting, monitoring and remedying maltreatment of children. G. Disability, basic health and welfare (arts. 6, 18 (3), 23, 24, 26, 27 (1)-(3) and 33) Children with disabilities 34. In the light of article 23 of the Convention and of general comment No. 9 (2006) on the rights of children with disabilities and given the fact that the vast majority of children with disabilities continue to receive education in segregated institutions and to be deprived of education after middle school, the Committee recommends that the State party adopt and promote a social and human rights-based approach to disability. Such an approach acknowledges that the disabling factors reside in the environmental and attitudinal barriers created by society and that all children with disabilities are 9