Sebastian Twaróg, PhD – an associate professor in the Chair of Social Logistics, the University of Economics in Katowice. Graduated from the Karol Adamiecki University of Economics in Katowice in 2009; in 2012 received the degree of doctor of economic sciences in the area of sciences on management, on the basis of his innovative dissertation entitled: Logistyczne aspekty zarządzania łańcuchami dostaw krwi w Polsce (Logistical aspects of management of supply chain of blood in Poland), for which he received an individual 2nd degree award of the Minister of Science and Higher Education. Author and co-author of 55 publications in Polish and English. Presented his works on many national and foreign conferences. Participated in foreign apprenticeship stays in Germany, Palestine, Russia, Sweden.