Photo de stock - 08 January 2020, Saxony-Anhalt, Magdeburg: Blood samples stand in front of a monitor on which a microscopic image of white blood cells can be seen. Blood reserves are a scarce commodity and in many cases are life-saving. But the number of blood donors is declining. Barmer calls on hospitals to improve management. The goal: save blood. Photo: Klaus-Dietmar Gabbert/dpa-Zentralbild/ZB. - Magdeburg/Saxony-Anhalt/Germany

Photo de stock: 08 January 2020, Saxony-Anhalt, Magdeburg: Blood samples stand in front of a monitor on which a microscopic image of white blood cells can be seen.

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