(b) To cooperate with the Working Group and help it to carry out its mandate effectively and, in that framework, give serious consideration to requests for visits to their countries; (c) To prevent the occurrence of enforced disappearances, including by guaranteeing that any person deprived of liberty is held solely in officially recognized and supervised places of detention, guaranteeing access to all places of detention by authorities and institutions whose competence in this regard has been recognized by the concerned State, maintaining official, accessible, up-to-date registers and/or records of detainees, and ensuring that detainees are brought before a judicial authority promptly after detention; (d) To work to eradicate the culture of impunity for the perpetrators of enforced disappearances and to elucidate cases of enforced disappearances as crucial steps in effective prevention; (e) To prevent and investigate with special attention cases of enforced disappearance of persons belonging to vulnerable groups, especially children, and to bring the perpetrators of these enforced disappearances to justice; (f) To take steps to provide adequate protection to witnesses of enforced or involuntary disappearances, human rights defenders acting against enforced disappearances and the lawyers and families of disappeared persons against any intimidation or ill-treatment to which they might be subjected; 5. Urges the Governments concerned: (a) To intensify their cooperation with the Working Group on any action taken pursuant to recommendations addressed to them by the Working Group; (b) To continue their efforts to elucidate the fate of disappeared persons and to ensure that competent authorities in charge of investigation and prosecution are provided with adequate means and resources to resolve cases and bring perpetrators to justice; (c) To make provisions in their legal systems for victims of enforced or involuntary disappearances or their families to seek fair, prompt and adequate