“…Another limitation of this review stems from the inherent variability in the severity of AP included in the different studies. While 6 studies included only severe AP, [9][10][11]20,23,26 9 studies included all patients within a range of AP severity. 7,8,21,22,24,25,27,28,44 Furthermore, even the group of patients with severe AP was not homogeneous, as various definitions of severity were applied.…”