Article 51 governs certificates of conformity issued by NBs (validity max 5 years, may be subject to conditions, suspended/withdrawn/restricted on non-compliance). Article 52 establishes the electronic system on NBs + certificates. Article 53 governs voluntary change of NB by the manufacturer. Article 54 allows derogations from conformity-assessment procedures by a competent authority in the interest of public health, patient safety or health, or to enable access to clinical trial in an emergency. Article 55 governs certificates of free sale issued by competent authorities for exports.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.