Fig. 2From: Electroacupuncture versus sham electroacupuncture for urinary retention in poststroke patients: study protocol for a multicenter, randomized controlled trialThe locations of acupoints BL31, BL32, BL33, and BL34. In the sacral region, BL31, BL32, BL33, and BL34 are located in the first, second, third, and fourth posterior sacral foramens, respectively. (World Health Organization Standard Acupuncture Point Locations in the Western Pacific Region)Back to article page