1. WHO. WHO surgical safety checklist and implementation manual (Internet). WHO. (Cited 2013 Sep 19). Available from: http://www.who.int/patientsafety/safesurgery/ss_checklist/en/.
2. NPSA. Patient safety resources (Internet). (Cited 2013 Sep 27). Available from: http://www.nrls.npsa.nhs.uk/resources/?EntryId45=92901.
3. The Royal College of Surgeons of Edinburgh and the School of Psychology Aberdeen University. Non-Technical Skills for Surgeons (NOTSS) (Internet). Available from: http://www.rcsed.ac.uk/education/patient-safety-and-notss/notss.aspx.
4. Prospective observational study to evaluate NOTSS (Non-Technical Skills for Surgeons) for assessing trainees' non-technical performance in the operating theatre;Crossley;Br J Surg,2011
5. WHO. WHO guidelines on hand hygiene in health care (Internet). WHO. (Cited 2013 Sep 27). Available from: http://www.who.int/gpsc/5may/tools/9789241597906/en/.