an Entity references as follows:
Erich Hoffmann (25 April 1868 – 8 May 1959) was a German dermatologist who was a native of Witzmitz, Pomerania. He studied medicine at the , and was later a professor at the Universities of Halle and Bonn. Hoffmann left Germany during the era of National Socialism, but returned to Bonn after the war and established a laboratory. In the late 1940s he published two books about his life in medicine, titled "Wollen und Schaffen" and "Ringen um Vollendung".