His doctoral thesis was: „The value of continuous monitoring of serum concentrations of acute phase of proteins and oligo elements in Chron’s disease“. In 2001 he specialised in gastroenterology and hepatology and in 2010 he received the European accreditation of gastroenterology and hepatology (he is the Fellow of the European Board of Gastroenterology and Hepatology, FEBGH). He teaches the module of „Internal medicine and Internal propedeutics“ for undergraduate and graduate studies at the School of Medicine, University of Zagreb. He is a lecturer of the module “Rational use of drugs” and leader of the modules “Diet therapy” and “Enteraland parenteral nutrition” for postgraduate studies at the Faculty of Food Technology and Biotechnology, University of Zagreb.