challenge: What is Julien Bogousslavsky's current position at Clinique Valmont in Montreux, Switzerland?
  
  A. Chief of Pediatric and Neonatal Services
  B. Chief of Oncology and Hematology Services
  C. Chief of Neurology and Neurorehabilitation Services
  D. Chief of Cardiology and Cardiovascular Services
  Answer: 