Prof. Krzysztof Jonderko MD, PhD, Dsc (Gastroenterology) graduated from the Medical University of Silesia in 1982. His professional career was entirely devoted to research in gastroenterology. Being a tutee of prof. Kornel Gibiński and subsequently of prof. Andrzej Nowak he wrote in 1985 a doctoral thesis (Ph.D.) entitled "The impact of histamine H2 receptor blockers, cimetidine and ranitidine, on gastric emptying in duodenal ulcer disease". In 1994 he wrote his Doctor of Science (D.Sc. in Gastroenterology) thesis entitled "The use of ultrasound to assess the effects of drugs on the contractility of the gallbladder in – studies on the impact of caerulein and calcitonin". On 20th May 2005 Krzysztof Jonderko was handed by his Excellence Mr. President of the Republic of Poland the title of Full Professor of Medicine. Currently Prof. Jonderko is employed as an ordinary professor in the Department of Basic Biomedical Sciences, School of Pharmacy, Medical University of Silesia. The flagship prof. K. Jonderko’s scientific research areas are: methodology and clinical applications of carbon (13CO2) respiratory tests in gastroenterology (e.g. liver function breath tests, exocrine pancreatic function breath tests, measurement of gastric emptying of solids and liquids), the use of electrogastrography (single and multi-channel) in the assessment of gastric myoelectrical activity, the impact of stress on the functional integrity of the digestive system.