2Kumar A,Singh N ,Prakash S, et al. Early enteral nutrition in severe acute panereatitis: a prospective randomized controlled trial comparing nasojejunal and nasogastric routes. J Clin Gastroenterol, 2006,40 : 431-434.
3Lai CW, Barlow R, Barnes M, et al. Bedside placement of nasojejunal tubes : a randomised-controlled trial of spiral- vs straight-ended tubes. Clin Nutr,2003 ,22 :267-270.
4Boulton-Jones JR, Lewis J, Jobling JC, et al. Experience of post-pylofic feeding in seriously ill patients in clinical practice. Clin Nutr, 2004,23:35-41.
5Gutierrez ED,Balfe DM. Fluoroscopically guided nasoenteric feeding tube placement:results of a 1 year study. Radiology, 1991, 178:759 762.
6Ott DJ,Mattox HE, Gelfand DW, et al. Enteral feeding tubes:placement by using fluoroscopy and endoscopy. Am J Roentgenol, 1991, 157:769 771.