Experimental: Acupuncture

Licensed acupuncturists with more than 5 years of experience will be responsible for administering interventions three times per week for 6 weeks. The needles (30 or 40 mm and 0.25 mm gauge; Soochow, Hwato) will be inserted and manipulated until De Qi, a sensation of soreness and tingling. Acupuncture was defined as targeting the 10 bilateral acupuncture points: Xinshu (BL15), Shenshu (BL23), Zhongliao (BL33), Sanyinjiao (SP6), Yinlingquan (SP9). The needle will be left in place for 30 minutes with brief manipulation at the beginning, middle, and end of therapy.

Sham_comparator: Sham Acupuncture

Treatment will be the same for the sham acupuncture, except for the following: the acupuncturist selected the same number of nonacupuncture, nontrigger points. Instead of eliciting De Qi, the needles will be minimally manipulated to avoid eliciting sensations other than initial contact with skin.

No_intervention: Usual Care

Patients receiving usual care received neither acupuncture nor sham acupuncture. After the 6-week assessment, patients will be offered the option to receive acupuncture treatment as the acupuncture group.