Harald Krentel is a specialist in gynecology and obstetrics, a certified gynecological oncologist, and a certified specialist in minimally invasive surgery (MIC III (AGE)). He specializes in surgery for deep endometriosis and gynecological cancer. He performs surgery for deep endometriosis of the colorectal and urinary tract, including nerve-sparing techniques in the deep retroperitoneal space. Krentel specializes in hysteroscopic and laparoscopic procedures in adenomyosis, including adenomyomectomy and cytoreductive procedures in infertility. • Director of the Clinic for Gynecology, Obstetrics, Gynecological Oncology and Senology, Bethesda Krankenhaus, Duisburg, Academic Teaching Hospital University Düsseldorf, Germany; • Head of Gynecological Cancer Center, Bethesda Krankenhaus, Duisburg, Germany; • Associate professor in the Department for Gynecology at Carl-von-Ossietzky University, Oldenburg, Germany; • Visiting professor at the Gynecology and Obstetrics Department at Universidad Peruana Cayetano Heredia, Lima, Peru; • Interim president of the European Endometriosis League; • Member of the Advisory Board, SEF, German Scientific Endometriosis Foundation; • Member of the ESGE Special Interest Group Reproductive Surgery; • Member of the ESGE Special Interest Group Endometriosis; • Medical director of the Peruvian German Center of Gynecological Surgery, CEGPA Medical Consulting, Lima, Perú.