McClave SA, Martindale RG, Vanek VW, ve diğerleri. (2009). "Guidelines for the Provision and Assessment of Nutrition Support Therapy in the Adult Critically Ill Patient: Society of Critical Care Medicine (SCCM) and American Society for Parenteral and Enteral Nutrition (A.S.P.E.N.)". JPEN J Parenter Enteral Nutr. 33 (3). ss. 277-316. doi:10.1177/0148607109335234. PMID19398613.
Fitzgerald JE, Ahmed I (December 2009). "Systematic review and meta-analysis of chewing-gum therapy in the reduction of postoperative paralytic ileus following gastrointestinal surgery". World J Surg. 33 (12). ss. 2557-66. doi:10.1007/s00268-009-0104-5. PMID19763686.
McClave SA, Martindale RG, Vanek VW, ve diğerleri. (2009). "Guidelines for the Provision and Assessment of Nutrition Support Therapy in the Adult Critically Ill Patient: Society of Critical Care Medicine (SCCM) and American Society for Parenteral and Enteral Nutrition (A.S.P.E.N.)". JPEN J Parenter Enteral Nutr. 33 (3). ss. 277-316. doi:10.1177/0148607109335234. PMID19398613.
Fitzgerald JE, Ahmed I (December 2009). "Systematic review and meta-analysis of chewing-gum therapy in the reduction of postoperative paralytic ileus following gastrointestinal surgery". World J Surg. 33 (12). ss. 2557-66. doi:10.1007/s00268-009-0104-5. PMID19763686.