Blood donations

https://www.wikidata.org/wiki/Q53467

Field Hierarchy

Parent
Medicine 49.4M papers	Biology 36M papers	Internal medicine 20.6M papers	Surgery 7.6M papers
Immunology 5.1M papers	Virology 2.4M papers	Family medicine 2M papers	Human immunodeficiency virus (HIV) 523k papers
Blood transfusion 77.8k papers		Blood donor 9,447 papers
Current
Blood donations 1,956 papers
Child

Trends

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History