This confusing situation was exploited by the Italian poet Gabriele D'Annunzio, who entered the city on 12 September 1919 and began a 15-month period of occupation.
V tem času pa je končno prišel pozitiven odgovor iz ZDA in Carl je odšel na Državni inštitut za preučevanje malignih bolezni (danes Spominski inštitut Roswell Park) v mestu Buffalo (New York).