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Tan, M., Harling, L. & Ashrafian, H. Leonardo da Vinci’s Five Grotesque Heads: early evidence of cranio-facial mycobacterial infection. Infection 42, 795–796 (2014). https://doi.org/10.1007/s15010-014-0644-y
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DOI: https://doi.org/10.1007/s15010-014-0644-y