Effect of ondansetron and metoclopramide on postoperative nausea and vomiting in children undergoing tonsillectomy with or without adenoidectomy: a systematic review with meta-analysis. - Sumie, Makoto; Cheng, Sierra; Niimi, Naoko; Englesakis, Marina; Yang, Alan; Adam, Ruxandra-Ioana; Pankiv, Evelina; Campisi, Paolo; Yamaura, Ken; Hayes, Jason; Aoyama, Kazuyoshi (Journal of Anesthesia, 2025)