“The Court recalls that, although not specifically mentioned inArticle 6 of the Convention , the right to silence and the right not to incriminate oneself, are generally recognised international standards which lie at the heart of the notion of a fair procedure under Article 6. Their rationale lies, inter alia, in the protection of the accused against improper compulsion by the authorities thereby contributing to the avoidance of miscarriages of justice and to the fulfilment of the aims of Article 6. The right not to incriminate oneself, in particular, presupposes that the prosecution in a criminal case seek to prove their case against the accused without resort to evidence obtained through methods of coercion or oppression in defiance of the will of the accused. In this sense the right is closely linked to the presumption of innocence contained inArticle 6(2) of the Convention . The right not to incriminate oneself is primarily concerned, however, with respecting the will of an accused person to remain silent. As commonly understood in the legal systems of the contracting parties to the Convention and elsewhere, it does not extend to the use in criminal proceedings of material which may be obtained from the accused through the use of compulsory powers but which has an existence independent of the will of the suspect such as, inter alia, documents acquired pursuant to a warrant, breath, blood and urine samples and bodily tissue for the purpose of DNA testing. …”