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Table 1 Schedule of enrollment, interventions, and assessments

From: Preemptive analgesia for hemorrhoidectomy: study protocol for a prospective, randomized, double-blind trial

  1. *Follow-up (1)—the first postoperative day
  2. **Follow-up (2)—the first week after the procedure
  3. ***Follow-up (3)—postoperative day 30