- To investigate the effects of true acupuncture administered twice weekly for 6 weeks (8-12 sessions) followed by 6 weekly treatments (4-6 sessions) of maintenance (12-18 sessions total over 12 weeks) compared to sham acupuncture and waitlist control in this study population; the evaluations at 12 and 24 weeks are to determine the benefit of additional 6 weekly acupuncture treatments for maintenance and to determine the durability of response after stopping acupuncture, respectively; the evaluation at 52 weeks is to determine the long-term effects of acupuncture and adherence to AIs.