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ImageFoto: Jennifer Strangalies (3T MRT, TiHo, Hannover)
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ImageFoto: Schlütersche Verlagsgesellschaft
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ImageFoto: Schlütersche
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ImageFoto: Tatyana Gladskih – adobe.stock.com
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ImageFoto: Justyna – stock.adobe.com
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ImageFoto: Simon Gayer – Fotolia.com
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ImageFoto: Cavan - stock.adobe.com
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ImageFoto: mnikolaev - stock.adobe.com
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ImageFoto: Eric - stock.adobe.com
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ImageFoto: Schlütersche Verlagsgesellschaft