Tropisetron plus dexamethasone is more effective than tropisetron alone for the prevention of postoperative nausea and vomiting in children undergoing tonsillectomy. - Holt,R.; Rask,P.; Coulthard,K.P.; Sinclair,M.; Roberts,G.; van der Walt,J.; MacKenzie,V.; Rasmussen,M. (Paediatr Anaesth, 2000)