Principle 10: Guarantees for victims and witnesses testifying on their behalf “Effective measures shall be taken to ensure the security, physical and psychological well-being, and, where requested, the privacy of victims and witnesses who provide information to the commission. “(a) Victims and witnesses testifying on their behalf may be called upon to testify before the commission only on a strictly voluntary basis; “(b) Social workers and/or mental health-care practitioners should be authorized to assist victims, preferably in their own language, both during and after their testimony, especially in cases of sexual assault; “(c) All expenses incurred by those giving testimony shall be borne by the State; “(d) Information that might identify a witness who provided testimony pursuant to a promise of confidentiality must be protected from disclosure. “Victims providing testimony and other witnesses should in any event be informed of rules that will govern disclosure of information provided by them to the commission. Requests to provide information to the commission anonymously should be given serious consideration, especially in cases of sexual assault, and the commission should establish procedures to guarantee anonymity in appropriate cases, while allowing corroboration of the information provided, as necessary.”112 Impunity Principles, principle 10. 112 70 ATTRIBUTING INDIVIDUAL RESPONSIBILITY