In what year did French pediatrician Jérôme Lejeune die: 1968, 1986, 1994 or 1995?

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Jérôme Jean Louis Marie Lejeune, a French pediatrician and geneticist, is most recognized for identifying the chromosomal causes of Down syndrome (trisomy 21) and cri du chat syndrome.

Dig deeper: codexery.com/pioneers-of-medicine/e/pioneers-of-medicine/j-r-me-lejeune/

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