A Phase III Multicenter, Randomized, Double-Blind, Active-Controlled, Parallel Group Study of the Efficacy and Safety of the Intravenous and Oral Formulations of the Neurokinin-1 Receptor Antagonist, Casopitant, administered in Combination with ZOFRAN and Dexamethasone for Prevention of Chemotherapy-Induced Nausea and Vomiting in Cancer Subjects Receiving Highly Emetogenic Cisplatin-Based Chemotherapy