This trial is a case-series, with a nested-qualitative study at the end of follow-up. Acupuncture treatment will be provided biweekly for 6 weeks, namely total 12 sessions, and follow-up period will be 4 weeks after the end of treatment. Changes of symptoms, quality of life and occured adverse events will be assessed during study procedure. Patients who agreed joining qualitative research will be interviewed about their experiences of acupuncture in detail.
