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Two patterns of acupoint indications. (A) Type 1 includes acupoints with regional indications distributed in the head, back, abdomen, and ankle (n = 17; BL23, BL25, BL60, CV3, CV4, CV12, EX-HN3, EX-HN5, GB20, GB30, GB34, GB40, KI3, PC7, SP9, ST25, ST29). (B) Type 2 includes acupoints with distal indications distributed in the upper/lower limbs (n = 7; BL40, HT7, LI10, LI11, LU7, SP8, ST40).
