FDA Letters Providing Clinical Investigators with Notice of Initiation of Disqualification Proceedings and Opportunity to Explain: www.fda.gov/foi/nidpoe/default.html
The Rules Governing Medicinal Products in the European Union Volume 10 - Guidance Documents Applying to Clinical Trials Guidance on Investigational Medicinal Products (IMPS) and 'Non Investigational Medicinal Products' (NIMPS), 18-Mar-2011: http://ec.europa.eu/health/files/eudralex/vol-10/imp_03-2011.pdf