From the case:
Head and neck veins: illustration
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Veins of the head and neck
Case Discussion
Author: OpenStax College
Original file: https://commons.wikimedia.org/wiki/File:2133_Head_and_Neck_Veins.jpg
Modifications: square crop by Dr. Humberto R. Prochnow Tibau
License: This file is licensed under Creative Commons Attribution 3.0 Generic (CC BY 3.0)
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