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Galen dissecting pig. 1541 / Alamy
Anne-Louis Girodet de Roussy-Trioson. Hippocrates refusing the gifts of Artaxerxes. 1792 / Alamy
Engraving. Avicenna massaging a patient. 1595/Alamy
Galen. Theory of the circulation of the blood. 1292 / Alamy
Spinal deformity correction method. 17th century/Alamy
Chinese deities of medicine / Alamy