Complex sentence: Walter Karl Koch was a German surgeon (Dortmund, Germany, May 3 1880 -?), best known for the discovery of Tawara's node, the atrioventricular node which is the beginning of his bundle about the auricular-ventricular.
Split into simpler sentences: Walter Karl Koch was a German surgeon (Dortmund, Germany, May 3 1880 -?). Koch is best known for the discovery of Tawaras node, the atrioventricular node which is the beginning of his bundle about the auricular-ventricular.