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800px-Spanish_flu_hospital.png
Lizenz:
CC BY 2.0 Generic
Urheber:
Image: courtesy of the National Museum of Health and Medicine, Armed Forces Institute of Pathology, Washington, D.C., United States.) / CC BY 2.5
Quelle:
Image: courtesy of the National Museum of Health and Medicine, Armed Forces Institute of Pathology, Washington, D.C., United States.) / CC BY 2.5