Original sentence: Étienne Eugène Azam (1822-1899) was a French surgeon from Bordeaux who is chiefly remembered for his work in psychology, particularly a case involving a female patient he named "Félida X" who seemed to have "alternating personalities", or what Azam referred to as doublement de la vie
Edited sentence: Étienne Eugène Azam (1822–1899) was a French surgeon from Bordeaux who is chiefly remembered for his work in psychology, particularly a case involving a female patient he named "Félida X" who seemed to have "alternating personalities", or what Azam referred to as doublement de la vie