 From 1919 until 1934, he worked at the Hôpital des Enfants-Malades in Paris.Pediatrician Jacques-Joseph Grancher (1843–1907) and surgeon Paul Georges Dieulafoy (1839–1911) were important influences on his career.He was also a student of pediatrician Antoine Bernard-Jean Marfan (1858–1942) and collaborated with dermatologist François Henri Hallopeau (1842–1919).