In this group, patients separately received twice electroacupuncture at bilateral PC6 acupoint before and after Cisplatin administration on the first day of chemotherapy.

In this group, patients separately received twice electroacupuncture at bilateral PC6 and RN12 acupoints before and after Cisplatin administration on the first day of chemotherapy.

In this group, patients separately received twice electroacupuncture at bilateral nonacupuncture point (S1 located at lateral of flexor carpi radialis, 2 cun above the wrist. S2 located at 3 cun right side of RN12) before and after Cisplatin administration on the first day of chemotherapy.

In this group, patients received no electroacupuncture

The needles used were Huatuo brand (Suzhou, China) sterile disposable stainless steel filiform; needles sized 0.25*25 mm. After disinfection, needles were inserted 0.5 to 0.8 inches into the skin and were manipulated manually to obtain Deqi. An electric stimulator (Huatuo SDZ-V, Suzhou, China) was connected to the needles and delivered a constant-current, 0.2-ms, density-wave, stimulus of 2 to 10-Hz frequency, level of intensity was as much as tolerable, but not painful to the subjects. The needles were left for 30 minutes and then removed.