The purpose of this study is to evaluate auricular acupuncture as an antiemetic treatment compared with sham acupuncture and with no acupuncture in patients receiving moderately-high to highly emetogenic chemotherapy. Acupuncture constitutes a nonpharmacological intervention for chemotherapy-induced nausea/vomiting (CINV). Chinese medicine holds that stimulating select points both on the body and the ear, that lie along meridians or life channels, can relieve diseases.