Comment on

• A factorial trial of six interventions for the prevention of postoperative nausea and vomiting.

  Apfel CC, Korttila K, Abdalla M, Kerger H, Turan A, Vedder I, Zernak C, Danner K, Jokela R, Pocock SJ, Trenkler S, Kredel M, Biedler A, Sessler DI, Roewer N; IMPACT Investigators. Apfel CC, et al. N Engl J Med. 2004 Jun 10;350(24):2441-51. doi: 10.1056/NEJMoa032196. N Engl J Med. 2004. PMID: 15190136 Free PMC article. Clinical Trial.