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Compassionate use by phase and application size for drugs. The US: The United States, The EU: the European Union, IND: Investigational New Drug, ATU: Authorisation Temporaire d' Utilisation (Temporary Authorizations for Use). Source: 21 CFR 312 Subpart I and Notice to applicants for marketing for ATU: http://ansm.sante.fr/var/ansm_site/storage/original/application/cadfbcf9594614d59c8915670853a28b.pdf.
