Schafer, L., K. Templin, P. Dlamini, J. Kruger, and E. van Wyk. “Osmolality of Modified Enteral Tube Feeds For Adults in Hospitals Across the Western Cape Province”. South African Journal of Clinical Nutrition, Vol. 22, no. 2, Apr. 2009, p. 81, http://sajcn.redbricklibrary.com/index.php/SAJCN/article/view/210.