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The follow-up features of the patients who underwent endoscopic necrosectomy due to WOPN.
| H2O2 used | H2O2 not used | P | |
| Mean of endoscopic sessions | 4.2 ± 1.4 | 6.1 ± 4.2 | .01 |
| The duration of the hospital stay (day) | 23.2 ± 10.2 | 27.4 ± 14.5 | .43 |
| Recurrence | 0 | 0 | |
| Procedure adeverse events | |||
| Self-limited bleeding | 0 | 1 | .19 |
| Perforation | 0 | 0 | |
| Stent maldeployment | 2 | 0 | |
| Infection of PFC cavity | 0 | 0 | |
