It deals with prevention, diagnostics, therapy, rehabilitation and aftercare of health disorders and diseases of internal organs, such as respiratory organs - pneumology, heart and circulation - cardiology, digestive organs - gastroenterology, kidneys - nephrology, blood and blood-forming organs - haematology, vascular system - angiology, metabolism and internal secretion - endocrinology and diabetology, immune system - immunology, support and connective tissue - rheumatology and infectious diseases - infectiology, poisoning - toxicology, solid tumors and hematological neoplasias - oncology, monitoring and therapy of seriously ill patients - intensive medicine and the influence of training and sport on healthy and sick people - sports medicine.