1. NHS safety agency issues guidance on nasogastric tubes;Coombes;BMJ,2005
2. National Patient Safety Agency. Patient safety alert NPSA/2011/PSA002: reducing the harm caused by misplaced nasogastric feeding tubes in adults, children and infants. 2011.
3. National Patient Safety Agency. Patient safety alert NPSA/PSA05: reducing harm caused by the misplacement of nasogastric feeding tubes. 2005.
4. Hanna GB , Phillips L , Priest O , et al . Improving the safety of nasogastric feeding tube insertion. Developing guidelines for the safe verification of feeding tube position—a decision analysis approach. A Report for the NHS Patient Safety Research Portfolio. 2010.
5. Confirmation of nasogastric tube position by pH testing