1. US Food and Drug Administration. Guidance for industry: guidance for clinical trial sponsors: establishment and operation of clinical trial data monitoring committees. March 2006. http://www.fda.gov/downloads/Drugs/GuidanceComplianceRegulatoryInformation/Guidances/ucm 124936.pdf (accessed November 9, 2009).
2. World Health Organization. Guidance: operational guidelines for the establishment and functioning of data and safety monitoring boards (version 05.1). 2005. http://www.who.int/tdrold/publications/publications/pdf/operat_guidelines.pdf (accessed November 6, 2009).
3. European Medicines Agency, Committee for Medicinal Products for Human Use. Guidance: guideline on data monitoring committees. July 27, 2005. EMEA/CHMP/EWP/5872/03, http://www.emea.europa.eu/pdfs/human/ewp/587203en.pdf (accessed November 9, 2009).
4. National Institutes of Health. NIH policy: policy for data and safety monitoring. June 10, 1998. http://grants.nih.gov/grants/guide/notice-files/not98-084.html (accessed November 9, 2009).
5. International Conference on Harmonization. ICH guideline for good clinical practice. E6 (R1). May 1996. http://www.ich.org/cache/compo/276-254-1.html (accessed March 31, 2010).