Harald Krentel is head of the Department of Gynecology, Obstetrics, and Gynecological Oncology at Bethesda Hospital Duisburg, Germany. He is President of the European Endometriosis League, Vice Chair of SIG Endometriosis of the ESGE, Assistant Professor at Carl-von-Ossietzky University in Oldenburg - Germany, and Invited Professor at Universidad Peruana Cayetano Heredia in Lima - Peru. He is a specialist in minimally invasive surgery (MIC III), gynecological oncologist, and gynecological sonographer.