Authors: K M Tveit; I Guldvog; S Hagen; E Trondsen; T Harbitz; K Nygaard; J B Nilsen; E Wist; E Hannisdal Journal: Br J Surg Date: 1997-08 Impact factor: 6.939
Authors: M J O'Connell; J A Martenson; H S Wieand; J E Krook; J S Macdonald; D G Haller; R J Mayer; L L Gunderson; T A Rich Journal: N Engl J Med Date: 1994-08-25 Impact factor: 91.245