The document is a preliminary scientific programme for the 12th European Congress of Internal Medicine taking place from October 2-5, 2013 in Prague, Czech Republic. It will include sessions on rheumatology, cardiology, lipid lowering therapy, pharmacotherapy, rare diseases, endocrinology, infectious diseases, nephrology, hypertension, atherosclerosis, and various topics presented through free paper communications. The programme provides an overview of sessions each day with topics, speakers, and schedules.