JPEN J Parenter Enteral Nutr, Vol. 30, No. 2. (r 2006), pp. 143-156.
BMJ (Clinical research ed.), Vol. 328, No. 7453. (12 June 2004)
N Engl J Med, Vol. 354, No. 20. (18 May 2006), pp. 2142-2150.
N Engl J Med, Vol. 355, No. 25. (21 December 2006), pp. 2670-2676.
The New England journal of medicine, Vol. 326, No. 9. (27 February 1992), pp. 589-593.
The New England journal of medicine, Vol. 328, No. 4. (28 January 1993), pp. 228-232.
Lancet, Vol. 2, No. 8618. (29 October 1988), pp. 979-983.
The New England journal of medicine, Vol. 328, No. 20. (20 May 1993), pp. 1433-1437.
The New England journal of medicine, Vol. 332, No. 22. (1 June 1995), pp. 1482-1490.
Annals of surgery, Vol. 232, No. 5. (November 2000), pp. 619-626.
The New England journal of medicine, Vol. 340, No. 18. (6 May 1999), pp. 1412-1417.
Radiology, Vol. 174, No. 2. (February 1990), pp. 331-336.
Lancet, Vol. 2, No. 8656. (22 July 1989), pp. 201-205.
Surgery, gynecology & obstetrics, Vol. 139, No. 1. (July 1974), pp. 69-81.
The New England journal of medicine, Vol. 330, No. 17. (28 April 1994), pp. 1198-1210.
JAMA : the journal of the American Medical Association, Vol. 291, No. 23. (16 June 2004), pp. 2865-2868.