1. Management of proximal femoral fractures 2011;Association of Anaesthetists of Great Britain and Ireland;Anaesthesia,2012
2. Mortality associated with delay in operation after hip fracture: observational study;Bottle;British Medical Journal,2006
3. Nerve blocks (subcostal, lateral cutaneous, femoral, triple, psoas) for hip fractures;Parker;Cochrane Database of Systematic Reviews,2002
4. The Medicines for Human Use (Clinical Trial) Regulations, 2004 (SI 2004/1031) as amended (SI 2006/1928, SI 2006/2984, SI 2008/941, SI 2009/1164, SI 2010/1882). Number 1031 and Amendment 1928.1-4-2004.