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7 ene 1840 año - Ignaz Semmelweis

Descripción:

Advocated hand washing to prevent transmission of puerperal fever from one OB patient to another

Añadido al timeline:

BIOL 203

ByBlessing
7 sep 2017
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679

fecha:

7 ene 1840 año
Ahora mismo
~ 185 years ago
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