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Points used in the 8 pain studies using Oleson's ear map. S, sham; X, either internal or external; TG, tragus; HX, helix; CR, concha ridge; AH, antihelix; TF, triangular fossa; SF, scaphoid fossa; SC, scaphoid concha; TG, tragus; IT, intertragic notch; LO, lobe. This figure was used with permission.
