Otto Ullrich
Otto Ullrich (1894 - 1957) was a German pediatrician. Eponymously remembered for his description of Ullrich-Turner syndrome (1930)
Tag Bartholin-Patau syndrome
Thomas Bartholin
Thomas Bartholin (1616 – 1680) was a Danish physician, mathematician and theologian. Trisomy 13 (Bartholin-Patau syndrome - 1657), Refrigeration anaesthesia (1661)
Klaus Patau
Klaus Pätau (1908 - 1975) was a German-born, American Cytogeneticist. Trisomy 13 is most commonly termed Patau Syndrome.