4. Mission members shall be obliged, prior to, during and after the mission, to respect the general principles for the implementation of the rights of the child, inter-alia, the principles relating to non-discrimination, participation of children and respect of the supreme interest of children. Article 19: 1. Principles relating to investigation methods In carrying out their mandate, mission members shall have the obligation to respect the laws and regulations of the State Party visited without however being hindered by these laws and regulations in the conduct of the mission. 2. States Parties shall be obliged to take all necessary measures to protect the alleged victims of violations of the rights of the child, their parents or legal representatives as well as witnesses met in the course of the mission against threats, harassments or any other form of intimidation that could be related to the investigation. 3. The State Party shall have the opportunity, at every stage of the investigation, to comment on the information collected by the mission. IV - REPORT, PUBLICATION AND FOLLOW-UP OF INVESTIGATION MIS- SIONS A) PREPARATION OF MISSION REPORT Article 20: 1. Preliminary results At the end of the mission and before leaving the country visited, the delegation shall prepare a document presenting the preliminary results of its investigation that shall be communicated to the government and media. 2. The above-mentioned preliminary results shall be presented at a press confer- ence and confidential information related to the consideration of certain violations of the rights of the child shall not be published. 10