Dr Frederic Billen graduated from the University of Liege in 2000. He completed an internship and residency training, also at Liege and became an ECVIM Diplomate in 2007. He presented a Masters degree on nasopharyngeal disorders in dogs and cats and subsequently, in 2008, a PhD on canine sino-nasal aspergillosis. He is currently senior lecturer in companion animals internal medicine and is responsible for training of undergraduate students, interns and internal medicine residents at Liège.