1. Medicines and Healthcare Products Regulatory Agency http://www.mhra. gov.uk/Howweregulate/Medicines/Inspectionandstandards/GoodLaboratoryPractice/index.htm
2. Code of Federal Regulations (USA) http://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfcfr/CFRSearch.cfm? CFRPart=58