1. The National Quality Forum: Safe Practices for Better Healthcare. A Consensus report. Washington: NQF; 2003.
2. The National Quality Forum. Safe Practices for Better Health Care, 2006 Update. Washington: NQF; 2007.
3. Sorra JS, Nieva VF. Hospital survey on patient safety culture. AHRQ Publication N. 04-0041. [Accedido 17 Ene 2008]. Rockville: Agency for Health care Research and Quality; 2004. Disponible en: http://www.ahrq.gov/qual/hospculture/usergd.htm.
4. Estudio Nacional sobre los Efectos Adversos Ligados a la Hospitalización. ENEAS 2005. Madrid: Ministerio de Sanidad y Consumo; 2006.
5. The basics of avoiding nonresponse errors;Mangione,1995