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Eighteen dermal zones described by horizontal lines at xiphoid (a), costal margin (b), umbilicus (c), anterior superior iliac spine to the pubic symphysis line on the abdomen (d), and the back (e); and vertical lines at midline (A), mid-clavicular line (B), anterior axillary line (C), mid-axillary line (D), posterior axillary line (E), infrascapular line (F), and back midline (J). Zone 7 is upper 1/3 part of the front thigh.
