In 2007, he completed an internship in lung transplantation (MHH, Hannover, Germany).
From 2004 to 2010 he worked as a research fellow in the Department of Lung and Mediastinal Surgery at the Russian Scientific Center of Surgery, Russian Academy of Medical Sciences.
In 2014, he completed an internship in new technologies in thoracic surgery (SNUBH, Seoul, South Korea).