Anal Fissure

Prof. Dr. med. Volker Wienert is a dermatologist, and served as head of the Department of Phlebology at Aachen University Clinic (RWTH) from 1986 until his retirement in 2004. Prof. Wienert is the author of several proctological and phlebological medical textbooks, and currently serves on the boards of several professional societies, including the German Society of Phlebology s Committee for Practice Guidelines (as Chairman), the guidelines commission of the German Society of Coloproctology, and the Quality Assurance Subcommittee on Proctology and Phlebology of Dermatology). He is also an Associate Editor of the journal Coloproctologie.

Dr. med. Franz Raulf is a surgeon, and was head of the Coloproctology Department of the Rafaelsklinik Münster from 2007 until his retirement in 2013. Dr. Raulf is the author of a number of proctological medical textbooks.

Dr. med. Horst Mlitz is a proctological practitioner. Having retired in 2016, Dr. Mlitz has also authored a number of proctological medical textbooks.