Complex sentence: He studied medicine at, and is currently serving as a professor of Pathology at the Jessenius School of Medicine in Martin a part of the Comenius University in Bratislava, as well as the head of the department of Pathology at the Martin University Hospital.
Split into simpler sentences: He studied medicine at, and is currently serving as a professor of Pathology at the Jessenius School of Medicine in Martin which is a part of the Comenius University in Bratislava. He is also the head of the department of Pathology at the Martin University Hospital.