Connection from Ugo Cerletti to Ivan Petrovich Pavlov:

3 Steps:
Ugo Cerletti (University of Rome, La Sapienza)
     |    (post-doc for)
Pierre Marie (Faculté de Médecine et L’Hôpital Salpêtrière de Paris)(Neurotree)
     |    (trained grad student)
Paul Ivan Yakovlev (Harvard University Medical School)(Neurotree)
     |    (grad student for)
Ivan Petrovich Pavlov (Imperial Medical Academy)(Neurotree)