Complex sentence: As "interne des hôpitaux" in Paris, Roussy worked under neurologists Pierre Marie and Joseph Jules Dejerine, and in 1907 earned his doctorate from the University of Paris.
Split into simpler sentences: As "interne des hôpitaux" in Paris, Roussy worked under neurologists Pierre Marie and Joseph Jules Dejerine. In 1907 he earned his doctorate from the University of Paris.