Thomas Bartholin
Thomas Bartholin (1616 – 1680) was a Danish physician, mathematician and theologian. Trisomy 13 (Bartholin-Patau syndrome - 1657), Refrigeration anaesthesia (1661)
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Klaus Patau
Klaus Pätau (1908 - 1975) was a German-born, American Cytogeneticist. Trisomy 13 is most commonly termed Patau Syndrome.