1. Errare humanum est … but it is also human to prevent errors;Cummins;ISBT Science Series.,2007
2. Proactive risk management: controlling uncertainly in product development;Smith,2002
3. Fragata J. Risco médico. [Powerpoint]. [Internet]. Lisboa: Ministério da Saúde; Março de 2005. [cited 2009 May 28]. Available from: http://www.hospitaisepe.min-saude.pt/NR/rdonlyres/FDFBFE54-74DE-42C8-BC7F-733BE758D96D/4090/12de14_Apresent_RiscoHospitalar_Josà %EF %83%A3Fragata_MÃ% EF%83%A3dico.pdf.
4. Kurz J. Quality risk management in blood establishments. [Internet]. Vienna, Austria: Federal Ministry of Health, Family and Youth; November 2008. [cited 2009 Apr 22]. Available from: http://www.ibto.ir/_DouranPortal/Documents/9e427040-715e-4fe9-9b88-96126ddde6d2.pdf.
5. ISO. ISO 31000:2009: Risk management: principles and guidelines. [Internet]. Geneva: International Organization for Standardization, 2009. [cited 2010 Jan 19]. Available from: http://www.iso.org/iso/catalogue_detail.htm?csnumber=43170.