1. Observe the adverse effects of palonosetron hydrochloride capsules(Ruo Shan®) that we already known, and whether there is any new adverse effects.Observe the incidence and the situation of adverse effects. Pay attention to the adverse effects in special groups, like pregnant women, children, elderly patients, and patients with liver and kidney dysfunction. Observe other safety issues related to drug using method, drug packaging method and drug quality.